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4-Hydroxy-5-nitrosalicylate, also known as 4-hydroxy-5-nitro-2-hydroxybenzoate, is an organic compound with the chemical formula C7H5NO6. It is a derivative of salicylic acid, featuring a hydroxyl group at the 4-position and a nitro group at the 5-position. This yellow crystalline solid is an important intermediate in the synthesis of various pharmaceuticals, dyes, and other chemical products. Due to its reactivity, it is used in the preparation of azo dyes and as a building block in the production of certain drugs. The compound is also of interest in chemical research for its potential applications in materials science and as a precursor in the synthesis of more complex organic molecules.

13722-95-7

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13722-95-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 13722-95-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,7,2 and 2 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 13722-95:
(7*1)+(6*3)+(5*7)+(4*2)+(3*2)+(2*9)+(1*5)=97
97 % 10 = 7
So 13722-95-7 is a valid CAS Registry Number.

13722-95-7Upstream product

13722-95-7Relevant academic research and scientific papers

PYRIMIDINES-19. RING TRANSFORMATION OF 5-NITROURACIL INTO NITRORESORCINOLS

Su, T.-L.,Watanabe, K. A.,Fox, J. J.

, p. 1405 - 1408 (1982)

The first intermolecular ring transformation of a uracil derivative into benzene system is reported.Treatment of 1,3-dimethyl-5-nitrouracil (1) with acetone in NaOMe/MeOH afforded 6-acetonyl-5,6-dihydro-1,3-dimethyl-5-nitrouracil (6) wich was converted into 4-nitroresorcinol (5) upon treatment with NaOEt/EtOH at reflux.Reaction of 1 with butanone gave two major products, 3-(5,6-dihydro-1,3-dimethyl-5-nitrouracil-6-yl)-butanone (7) and 1-(uracil-6-yl)butanone isomer (8).Prolonged treatment of 7 with NaOEt/EtOH afforded 4-methyl-6-nitro-resorcinol (9) whereas 8 was converted into 2-methyl-4-nitro-resorcinol (10).Treatment of 1 with diethyl acetonedicarboxylate in NaOEt/EtOH afforded diethyl-2-(5,6-dihydro-1,3-dimethyl-5-nitrouracil-6-yl)-acetonedicarboxylate (2).Prolonged treatment of 2 with NaOEt/EtOH at reflux afforded (5,6-dihydro-1,3-dimethyl-6-nitrouracil-6-yl)acetic acid (3).Apparently, 2 underwent a retroClaisen reaction to give 3.Reaction of 1 with ethyl acetoacetate in NaOEt/EtOH gave adduct isomers 4 which underwent transformation reaction to give eventually 6-nitroresorcinol (5).

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