A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 1008-72-6, Name is Sodium 2-formylbenzenesulfonate, molecular formula is C7H5NaO4S. In an article, author is Hosseininasab, Nasrinsadat,once mentioned of 1008-72-6, SDS of cas: 1008-72-6.
Synthesis of New Pyrimido[4,5:3,4]pyrazolo[1,2-b]phthalazine-4,7,12-triones: Derivatives of a New Heterocyclic Ring System
Several derivatives of the new pyrimido[4,5:3,4]pyrazolo[1,2-b]phthalazine-4,7,12-trione ring system have been prepared by the reaction of 3-amino-1-aryl-5,10-dioxo-5,10-dihydro-1H-pyrazolo[1,2-b]phthalazine-2-carbonitriles with aliphatic carboxylic acids in the presence of phosphoryl chloride (POCl3). The synthesized compounds were characterized on the basis of IR, H-1 NMR, and C-13 NMR spectral and microanalytical data.
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Reference:
Phthalazine – Wikipedia,
,Phthalazine | C8H6N2 – PubChem