Heterocyclic Building Blocks-phthalazine

An article SkinEthic (TM) HCE Eye Irritation Test: Similar performance demonstrated after long distance shipment and extended storage conditions WOS:000454467300022 published article about HAZARD IDENTIFICATION; CHEMICALS; EIT in [Leblanc, Virginie; Grandidier, Marie-Helene; Cotovio, Jose; Alepee, Nathalie] LOreal Res & Innovat, 1 Ave Eugene Schueller, F-93600 Aulnay Sous Bois, France; [Yokota, Mariko] Cosmos Tech Ctr Co Ltd, NIKKOL Grp, Tokyo, Japan; [Yoshida, Daisuke; Kyoutani, Daiki] Nikoderm Res Inc, NIKKOL Grp, Osaka, Japan; [Adriaens, Els] Adriaens Consulting, Aalter, Belgium in 2019.0, Cited 16.0. Recommanded Product: 62-23-7. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7

Assessment of ocular irritation risk is an international regulatory requirement in the safety evaluation of products. In response to this need, L’Oreal developed the SkinEthie Human Corneal Epithelium (HCE) Eye Irritation Test (Err) that has been included in OECD Test Guideline 492. SkinEthic (TM) HCE EIT is able to correctly and reliably identify chemicals not requiring classification versus labelling for eye irritation or serious eye damage according to UN GHS. In an effort to promote its global use, the performance of the method was evaluated after long-distance shipment and compared to European shipment conditions. Results obtained by Cosmos Technical Center (Japan) after extended tissues transit were compared to results obtained in L’Oreal (France). Thirty-nine out of 40 blinded chemicals, representing different functional chemical classes, were consistently classified in both laboratories. The SkinEthic (TM) HCE EIT test method was also evaluated for its performance after extended storage of the tissues. The performance was in agreement with the values reported in OECD TG 492, with an overall accuracy of 87.1% (based on 119 chemicals), sensitivity of 95.5% and specificity of 73.5%. The reliability and relevance of SkinEthic (TM) HCE Err test method after long-distance shipment and extended storage remain in agreement with regulatory validation criteria.

Recommanded Product: 62-23-7. Bye, fridends, I hope you can learn more about C7H5NO4, If you have any questions, you can browse other blog as well. See you lster.

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Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

An article Osteomyelitis Increases the Rate of Amputation in Patients With Type 2 Diabetes and Lower Extremity Burns WOS:000593247600012 published article about OUTCOMES in [Nizamani, Rabia; Heisler, Stephen; Chrisco, Lori; Jones, Samuel W.; Williams, Felicia N.] Univ N Carolina, Dept Surg, Sch Med, Chapel Hill, NC 27515 USA; [Nizamani, Rabia; Chrisco, Lori; Jones, Samuel W.; Williams, Felicia N.] North Carolina Jaycee Burn Ctr, Chapel Hill, NC USA; [Campbell, Harold] Mt Area Hlth Educ Ctr, Asheville, NC USA in 2020.0, Cited 14.0. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7. HPLC of Formula: C7H5NO4

In patients with diabetes mellitus (DM), amputation rates exceed 30% when lower extremity osteomyelitis is present. We sought to determine the rate of osteomyelitis and any subsequent amputation in our patients with DM and lower extremity burns. We performed a single-site, retrospective review at our burn center using the institutional burn center registry, linked to clinical and administrative data. Adults (>= 18 years old) with DM admitted from January 1, 2014 to December 31, 2018 for isolated lower extremity burns were eligible for inclusion. We evaluated demographics, burn characteristics, comorbidities, presence of radiologically confirmed osteomyelitis, length of stay (LOS), inpatient hospitalization costs, and amputation rate at 3 months and 12 months after injury. We identified 103 patients with DM and isolated lower extremity burns. Of these, 88 patients did not have osteomyelitis, while 15 patients had radiologically confirmed osteomyelitis within 3 months of the burn injury. Compared to patients without osteomyelitis, patients with osteomyelitis had significantly increased LOS (average LOS 22.7 days vs 12.1 days, P = .0042), inpatient hospitalization costs (average $135,345 vs $62,237, P = .0008), amputation rate within 3 months (66.7% vs 5.70%, P < .00001), and amputation rate within 12 months (66.7% vs 9.1%, P < .0001). The two groups were otherwise similar in demographics, burn injury characteristics, access to healthcare, and preexisting comorbidities. Patients with DM and lower extremity burns incurred increased LOS, higher inpatient hospitalization costs, and increased amputation rates if radiologically confirmed osteomyelitis was present within 3 months of the burn injury. Welcome to talk about 62-23-7, If you have any questions, you can contact Nizamani, R; Heisler, S; Chrisco, L; Campbell, H; Jones, SW; Williams, FN or send Email.. HPLC of Formula: C7H5NO4

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Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

An article Inhibition potential of phenyl linked benzimidazole-triazolothiadiazole modular hybrids against beta-glucuronidase and their interactions thereof WOS:000572832200005 published article about IN-VITRO EVALUATION; ALPHA-GLUCOSIDASE INHIBITION; MOLECULAR DOCKING; BIOLOGICAL EVALUATION; SCHIFF-BASES; DERIVATIVES; ACETYLCHOLINESTERASE; THIOSEMICARBAZIDES; CHILDREN; ANALOGS in [Taha, Muhammad] Imam Abdulrahman Bin Faisal Univ, Inst Res & Med Consultat IRMC, Dept Clin Pharm, POB 1982, Dammam 31441, Saudi Arabia; [Uddin, Nizam] Univ Karachi, Dept Chem, Karachi 75270, Pakistan; [Ali, Muhammad] Univ Nizwa, Nat & Med Sci Res Ctr, POB 33, Birkat Al Mauz 616, Nizwa, Oman; [Anouar, El Hassane] Prince Sattam bin Abdulaziz Univ, Coll Sci & Humanities Al Kharj, Dept Chem, Al Kharj 11942, Saudi Arabia; [Rahim, Fazal] Hazara Univ, Dept Chem, Mansehra 21300, Khyber Pakhtunk, Pakistan; [Khan, Gulraiz] Imam Abdulrahman Bin Faisal Univ, Environm Engn Dept, Coll Engn Bldg A13,POB 1982, Dammam 31441, Saudi Arabia; [Farooq, Rai Khalid] Imam Abdulrahman Bin Faisal Univ, Inst Res & Med Consultat IRMC, Dept Neurosci Res, POB 1982, Dammam 31441, Saudi Arabia; [Gollapalli, Mohammed] Imam Abdulrahman Bin Faisal Univ, Coll Comp Sci & Informat Technol CCSIT, Dept Comp Informat Syst, POB 1982, Dammam 31441, Saudi Arabia; [Iqbal, Naveed] Univ Poonch Rawalakot AJK, Dept Chem, Rawalakot, Pakistan; [Farooq, Muhammad] Hazara Univ, Dept Phys, Mansehra 21300, Khyber Pakhtunk, Pakistan; [Khan, Khalid Mohammed] Univ Karachi, Int Ctr Chem & Biol Sci, HEJ Res Inst Chem, Karachi 75270, Pakistan in 2020, Cited 54. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7. SDS of cas: 62-23-7

beta-Glucuronidase is responsible for the catalytic deconjugation of beta-D-glucuronides. beta-Glucuronidase has evolved to be a viable molecular target for numerous therapeutic treatments. It plays a pivotal role in the metabolism of drugs and endogenous substances. Herein, we report the inhibitory potentials of newly developed and modular benzimidazole-triazolothiadiazole hybrids spaced through a phenyl linker (1-26) and their interactions with the beta-glucuronidase. All analogues showed IC50 values in the range of 1.30 +/- 0.10 to 44.10 +/- 0.80 mu M, and hence were found to have outstanding inhibitory potential as compare to the standard D-saccharic acid 1,4-lactone (IC50 = 48.4 +/- 1.25 mu M). These modular hybrids were successfully synthesized, rigorously characterized through various spectroscopic techniques. Molecular docking studies further revealed the potential interactions between the inhibitor and active amino acid site in beta-glucuronidase. These findings helped in identifying the potential for new drug candidates. A Plausible structure activity relationship (SAR) were established which suggested that variation in the inhibitory potential was mainly based upon the substituents attached to the phenyl ring. (C) 2020 Elsevier B.V. All rights reserved.

SDS of cas: 62-23-7. About 4-Nitrobenzoic acid, If you have any questions, you can contact Taha, M; Uddin, N; Ali, M; Anouar, E; Rahim, F; Khan, G; Farooq, RK; Gollapalli, M; Iqbal, N; Farooq, M; Khan, KM or concate me.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Category: phthalazines. I found the field of Pharmacology & Pharmacy; Chemistry very interesting. Saw the article Design and evaluation of Nrf2 activators with 1,3,4-oxa/thiadiazole core as neuro-protective agents against oxidative stress in PC-12 cells published in 2020.0, Reprint Addresses Sun, HP (corresponding author), China Pharmaceut Univ, Dept Med Chem, Nanjing 211198, Jiangsu, Peoples R China.; Feng, F (corresponding author), Jiangsu Food & Pharmaceut Sci Coll, Huaian 223003, Peoples R China.. The CAS is 62-23-7. Through research, I have a further understanding and discovery of 4-Nitrobenzoic acid.

Oxidative stress plays vital roles in virous neurodegenerative diseases including Alzheimer’s disease. Activation of the transcription factor Nrf2 (nuclear factor erythroid 2-related factor 2), the key regulator of oxidative stress, may provide a new therapeutic strategy for these diseases. Herein we synthesized and evaluated a series of 1,3,4-oxa/thiadiazole core Nrf2 activators as neuroprotective agents. The representative compound 8 exhibited cytoprotective and Nrf2 activation effects in a neuron-like PC-12 cells. Additionally, compound 8 showed good membrane permeability, indicating this compound could penetrate blood-brain barrier (BBB) to reach central nervous system (CNS) as a neuro-protective agent. These results indicated that these Nrf2 activators with 1,3,4-oxa/thiadiazole core could serve as a new chemotype against oxidative stress in neurodegenerative diseases.

Category: phthalazines. About 4-Nitrobenzoic acid, If you have any questions, you can contact Lin, HZ; Qiao, YT; Yang, HY; Li, Q; Chen, Y; Qu, W; Liu, WY; Feng, F; Sun, HP or concate me.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

SDS of cas: 62-23-7. In 2019.0 EUR J ORG CHEM published article about DIELS-ALDER REACTION; ALPHA,BETA-UNSATURATED ALDEHYDES; ENANTIOSELECTIVE SYNTHESIS; 1,3-DIPOLAR CYCLOADDITIONS; ORGANOCATALYTIC 4+2; NATURAL-PRODUCTS; CONSTRUCTION; CATALYSIS; AMINE; DESIGN in [Muthusamy, Subramaniam; Kesavan, Venkitasamy] Indian Inst Technol Madras, Chem Biol Lab, Dept Biotechnol, Bhupat & Jyothi Mehta Sch Biosci Bldg, Chennai 600036, Tamil Nadu, India in 2019.0, Cited 104.0. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7.

An asymmetric [3 + 2] formal cycloaddition reaction between oxindole alpha-keto esters and enals has been developed. This alpha,gamma-regioselective reaction afforded multifunctional carbocyclic oxindoles via dienamine-enamine cascade reaction followed by isomerization. Furthermore, a highly enantioselective Diels-Alder reaction was demonstrated between 2,4-dienals and oxindole alpha-keto esters via trienamine intermediates. Chiral secondary amine catalyzed the both reactions under mild conditions and the cyclized products were isolated in moderate to good yields with good diastereoselectivities (>20:1 dr) and enantioselectivities (up to 99 %).

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Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

An article Cost-Benefit Analysis of Transitional Care in Neurosurgery WOS:000493569500057 published article about LENGTH-OF-STAY; HOSPITAL READMISSIONS; SUBARACHNOID HEMORRHAGE; REDUCING READMISSIONS; 30-DAY READMISSIONS; DISCHARGED HOME; RISK-FACTORS; PROGRAM; INTERVENTION; STRATEGIES in [Liu, Jingyi; Dasenbrock, Hormuzdiyar H.; Aglio, Linda S.; Smith, Timothy R.; Gormley, William B.; Robertson, Faith C.] Harvard Med Sch, Boston, MA 02115 USA; [Liu, Jingyi; Gormley, Natalia; Dasenbrock, Hormuzdiyar H.; Aglio, Linda S.; Smith, Timothy R.; Gormley, William B.; Robertson, Faith C.] Brigham & Womens Hosp, Computat Neurosci Outcomes Ctr, 75 Francis St, Boston, MA 02115 USA; [Gormley, Natalia; Dasenbrock, Hormuzdiyar H.; Smith, Timothy R.; Gormley, William B.] Brigham & Womens Hosp, Dept Neurol Surg, Boston, MA USA; [Gormley, Natalia] Harvard TH Chan Sch Publ Hlth, Dept Social & Behav Sci, Boston, MA USA; [Aglio, Linda S.] Brigham & Womens Hosp, Dept Anesthesiol Perioperat & Pain, Boston, MA USA in 2019.0, Cited 44.0. Formula: C7H5NO4. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7

BACKGROUND: Transitional care programs (TCPs) coordinate care to improve safety and efficiency surrounding hospital discharge. While TCPs have the potential to reduce hospital length of stay and readmissions, their financial implications are less well understood. OBJECTIVE: To perform a cost-benefit analysis of a previously published neurosurgical TCP implemented at an urban academic hospital from 2013 to 2015. METHODS: Patients received intensive preoperative education and framing of expectations for hospitalization, in-hospital discharge planning and medication reconciliation with a nurse educator, and a follow-up phone call postdischarge. The cost-benefit analysis involved program costs (nurse educator salary) and total direct hospital costs within the 30-d perioperative window including readmission costs. RESULTS: The average cost of the TCP was $435 per patient. The TCP was associated with an average total cost reduction of 17.2% (95% confidence interval [CI]: 7.3%-26.7%, P=.001). This decrease was driven by a 14.3% reduction in the average initial admission cost (95% CI: 6.2%-23.7%, P=.001), largely attributable to the 16.3% decrease in length of stay (95% CI: 9.93%-23.49%, P<.001). Thirty-day readmissions were significantly decreased in the TCP group, with a 5.5% readmission rate for controls and 2.4% for TCP enrollees (P=.04). The average cost of readmission was decreased by 71.3% (95% CI: 58.7%-74.7%, P<.01). CONCLUSION: This neurosurgical TCP was associated with decreased costs of initial admissions, 30-d readmissions, and total costs of hospitalization alongside previously published decreased length of stay and reduced 30-d readmission rates. These results underscore the clinical and financial feasibility and impact of transitional care in a surgical setting. About 4-Nitrobenzoic acid, If you have any questions, you can contact Liu, JY; Gormley, N; Dasenbrock, HH; Aglio, LS; Smith, TR; Gormley, WB; Robertson, FC or concate me.. Formula: C7H5NO4

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

Formula: C7H5NO4. Recently I am researching about ENANTIOSELECTIVE ACYL TRANSFER; ASYMMETRIC ESTERIFICATION; PIVALIC ANHYDRIDE; FACILE SYNTHESIS; DIPHENYLACETIC ACID; CARBOXYLIC-ACIDS; BASICITY SCALE; ALCOHOLS; SECONDARY; DERIVATIVES, Saw an article supported by the ERC under European Union/E.R.C. [279850]; Chinese Scholarship Scheme; University of St Andrews; Royal SocietyRoyal Society of LondonEuropean Commission. Published in WILEY-V C H VERLAG GMBH in WEINHEIM ,Authors: Qu, S; Greenhalgh, MD; Smith, AD. The CAS is 62-23-7. Through research, I have a further understanding and discovery of 4-Nitrobenzoic acid

An operationally simple isothiourea-catalysed acylative kinetic resolution of unprotected 1,1 ‘-biaryl-2,2 ‘-diol derivatives has been developed to allow access to axially chiral compounds in highly enantioenriched form (s values up to 190). Investigation of the reaction scope and limitations provided three key observations: i) the diol motif of the substrate was essential for good conversion and high s values; ii) the use of an alpha,alpha-disubstituted mixed anhydride (2,2-diphenylacetic pivalic anhydride) was critical to minimize diacylation and give high selectivity; iii) the presence of substituents in the 3,3 ‘-positions of the diol hindered effective acylation. This final observation was exploited for the highly regioselective acylative kinetic resolution of unsymmetrical biaryl diol substrates bearing a single 3-substituent. Based on the key observations identified, acylation transition state models have been proposed to explain the atropselectivity of this kinetic resolution.

Formula: C7H5NO4. About 4-Nitrobenzoic acid, If you have any questions, you can contact Qu, S; Greenhalgh, MD; Smith, AD or concate me.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

An article Cardiotoxicity of Consolida rugulosa, a poisonous weed in Western Chin WOS:000456890700018 published article about DITERPENOID ALKALOIDS; NORDITERPENOID ALKALOIDS; DELPHINIUM; TOXICITY; CYTOTOXICITY; MICE in [Lei, Liang; He, Wenjuan; Song, Hongping] Huazhong Univ Sci & Technol, Wuhan Hosp 4, Dept Pharm, Puai Hosp,Tongji Med Coll, Wuhan 430030, Hubei, Peoples R China; [Sun, Weiguang; Hu, Zhengxi; Zhang, Yonghui] Huazhong Univ Sci & Technol, Tongji Med Coll, Hubei Key Lab Nat Med Chem & Resource Evaluat, Sch Pharm, Wuhan 430030, Hubei, Peoples R China; [He, Long] Huazhong Univ Sci & Technol, Tongji Med Coll, Wuhan Hosp 4, Dept Clin Lab,Puai Hosp, Wuhan 430030, Hubei, Peoples R China; [Jiang, Hongfeng] Huazhong Univ Sci & Technol, Tongji Med Coll, Wuhan Hosp 4, Dept Geriatr, Wuhan 430030, Hubei, Peoples R China; [Zhang, Mingjin; Gu, Ye] Huazhong Univ Sci & Technol, Tongji Med Coll, Wuhan Hosp 4, Dept Cardiol, Wuhan 430030, Hubei, Peoples R China in 2019.0, Cited 33.0. Computed Properties of C7H5NO4. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7

Poisonous weeds are a global problem since they not only hinder local economic development, but also cause ecological harm. Consolida rugulosa (family Ranunculaceae) is a weed that is widespread in Northwestern China and causes severe poisoning when ingested by livestock. In the present study, we purified the toxins in this plant and investigated their mechanism of action. Five natural diterpene alkaloids (compounds 1-5)-including two new compounds (1 and 2)-were isolated, and five semi-synthetic derivatives (6-10) were synthesised based on 4 or 5 for structure-activity analysis. The toxicity of the compounds was evaluated in vitro with lactate dehydrogenase (LDH) assay. All of the compounds-especially 1-stimulated LDH release in primary cultured rat myocardial cells, an effect that was blocked by the Na+ channel blocker lidocaine. Electrocardiography revealed that rats treated with 1 had severe arrhythmia, while heart Doppler echocardiography and analysis of serum biomarkers levels revealed that administration of 1 for 15 days induced changes in cardiac structure and myocardial enzyme levels. These effects were antagonised by lidocaine treatment. Thus, diterpene alkaloids are the main compounds responsible for the cardiotoxicity of C. rugulosa, which can be mitigated by co-administration of lidocaine.

Welcome to talk about 62-23-7, If you have any questions, you can contact Lei, L; Sun, WG; He, L; Jiang, HF; Zhang, MJ; He, WJ; Hu, ZX; Gu, Y; Song, HP; Zhang, YH or send Email.. Computed Properties of C7H5NO4

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

I found the field of Biochemistry & Molecular Biology; Chemistry very interesting. Saw the article Design, synthesis of 1,3-dimethylpyrimidine-2,4-diones as potent and selective aldehyde dehydrogenase 1A1 (ALDH1A1) inhibitors with glucose consumption improving activity published in 2020. Quality Control of 4-Nitrobenzoic acid, Reprint Addresses Jiang, C (corresponding author), China Pharmaceut Univ, Jiang Su Key Lab Drug Design & Optimizat, Tongjiaxiang 24, Nanjing 210009, Peoples R China.. The CAS is 62-23-7. Through research, I have a further understanding and discovery of 4-Nitrobenzoic acid

LDH1A1, one of 19 NAD(P)(+)-dependent aldehyde dehydrogenases, participates in multiple metabolic pathways and has been indicated to play an important role in obesity and diabetes. In this study, a series of 1,3-di-methylpyrimidine-2,4-diones were designed, synthesized and evaluated as novel selective aldehyde dehy-drogenase 1A1 inhibitors. Among them, compounds 46, 50, 53, 56 and 57 exhibited excellent inhibitory activity against ALDH1A1 with IC50 values in the low nanomolar range and high selectivity over ALDH1A2, ALDH1A3, ALDH2 and ALDH3A1. Furthermore, in vitro study demonstrated that compound 57 effectively improved glucose consumption in HepG2 cells compared to compound 1 (CM026).

Quality Control of 4-Nitrobenzoic acid. Bye, fridends, I hope you can learn more about C7H5NO4, If you have any questions, you can browse other blog as well. See you lster.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem

In 2020 J AGR FOOD CHEM published article about CUL3-BASED E3 LIGASE; OXIDATIVE STRESS; THERAPEUTIC TARGET; PC12 CELLS; NEURODEGENERATIVE DISEASES; MITOCHONDRIAL DYSFUNCTION; KEAP1-NRF2-ARE PATHWAY; BIOLOGICAL EVALUATION; HYDROGEN-PEROXIDE; CANCER PREVENTION in [Song, Zi-Long; Bai, Feifei; Zhang, Baoxin; Fang, Jianguo] Lanzhou Univ, State Key Lab Appl Organ Chem, Lanzhou 730000, Peoples R China; [Song, Zi-Long; Bai, Feifei; Zhang, Baoxin; Fang, Jianguo] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China in 2020, Cited 70. The Name is 4-Nitrobenzoic acid. Through research, I have a further understanding and discovery of 62-23-7. Computed Properties of C7H5NO4

Oxidative stress is implicated in the pathogenesis of a wide variety of neurodegenerative disorders, and accordingly, dietary supplement of exogenous antioxidants or/and upregulation of the endogenous antioxidant defense system are promising for therapeutic intervention or chemoprevention of neurodegenerative diseases. Nrf2, a master regulator of the cellular antioxidant machinery, cardinally participates in the transcription of cytoprotective genes against oxidative/electrophilic stresses. Herein, we report the synthesis of 59 structurally diverse dithiolethiones and evaluation of their neuroprotection against 6-hydroxydopamine- or H2O2 -induced oxidative damages in PC12 cells, a neuron-like rat pheochromocytoma cell line. Initial screening identified compounds 10 and 11 having low cytotoxicity but conferring remarkable protection on PC12 cells from oxidative-mediated damages. Further studies demonstrated that both compounds upregulated a battery of antioxidant genes as well as corresponding genes’ products. Significantly, silence of Nrf2 expression abolishes cytoprotection of 10 and 11, indicating targeting Nrf2 activation is pivotal for their cellular functions. Taken together, the two lead compounds discovered here with potent neuroprotective functions against oxidative stress via Nrf2 activation merit further development as therapeutic or chemopreventive candidates for neurodegenerative disorders.

Computed Properties of C7H5NO4. About 4-Nitrobenzoic acid, If you have any questions, you can contact Song, ZL; Bai, FF; Zhang, BX; Fang, JG or concate me.

Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem