Structural Formula Vector Image
Title: Carzenide
CAS Registry Number: 138-41-0
CAS Name: 4-(Aminosulfonyl)benzoic acid
Additional Names: p-sulfamoylbenzoic acid; 4-carboxybenzenesulfonamide; p-sulfonamidobenzoic acid; benzoic acid 4-sulfamide
Molecular Formula: C7H7NO4S
Molecular Weight: 201.20
Percent Composition: C 41.79%, H 3.51%, N 6.96%, O 31.81%, S 15.94%
Literature References: Byproduct in the production of saccharin. Prepn from toluene p-sulfonamide: W. A. Noyes, Am. Chem. J. 7, 145 (1885); A. A. Goldberg, A. H. Wragg, J. Chem. Soc. 1960, 1408. Metabolism: L. M. Ball et al., Xenobiotica 8, 183 (1978). HPLC determn in saccharin samples: A. E. Mooser, J. Chromatogr. 287, 113 (1984). Toxicity data: D. Appenroth, H. Bräunlich, Pharmazie 38, 102 (1983).
Properties: Flat, shiny prisms from water, dec 280°. pKa 3.50. Practically insol in cold water, ether, benzene. Freely sol in alcohol. LD50 i.p. in rats: 350 ± 22 mg/kg (Appenroth, Bräunlich).
pKa: pKa 3.50
Toxicity data: LD50 i.p. in rats: 350 ± 22 mg/kg (Appenroth, Bräunlich)
Derivative Type: Sodium salt
Molecular Formula: C7H6NNaO4S
Molecular Weight: 223.18
Percent Composition: C 37.67%, H 2.71%, N 6.28%, Na 10.30%, O 28.68%, S 14.37%
Properties: Crystals. Neutral. Soly in water: ~20 g/100 ml.

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