Dorzolamide hydrochloride130693-82-2100 % similar Dorzolamide120279-96-193 % similar N-[(4S,6S)-2-(Aminosulfonyl)-5,6-dihydro-6-methyl-7,7-dioxido-4H-thieno[2,3-B]thiopyran-4-yl]acetamide147200-03-152 % similar Brinzolamide138890-62-748 % similar (4S,6S)-5,6-Dihydro-4-hydroxy-6-methylthieno[2,3-b]thiopyran 7,7-dioxide147086-81-532 % similar (4R,6S)-5,6-Dihydro-4-hydroxy-6-methylthieno[2,3-b]thiopyran-7,7-dioxide147128-77-632 % similar