1H-1,4-BENZODIAZEPINE-3-CARBOXYLIC ACID, 2-HYDROXY-7-NITRO-5-PHENYL-, MONOPOTASS 1H-1,4-Benzodiazepine-3-carboxylic acid, 2-hydroxy-7-nitro-5-phenyl-, monopotassium salt, compd. with potassium hydroxide 24477-47-2 4335 CB