... almost white crystalline powder 3.Cas No.130693-82-2 4.Anti glaucoma topical eye drops Product nameDorzolomide HydrochlorideMFG. Date20130308Package1kg/bagBatch ... as follows:MedicineSynonyms(2S,4S)-2-Ethylamino-4-methyl-5,5-dioxo-5,7-dithiabicyclo[4.3.0]nona-8,10-diene ... ImpurityNot more than 0.5%0.21%ConclusionConforms USP32 Dorzolomide Hydrochloride