Dorzolamide

Dorzolamide EP Impurity A Dorzolamide Impurity A:

(4R,6R)-4-(Ethylamino)-6-methyl-5,6-dihydro-4H-thieno[2, 3-b]thiopyran-2-sulfonamide 7,7-dioxide HCl ; CAS : 120279-95-0 (base) ; 122028-36-8 (HCl salt) ; C10H17ClN2O4S3 (HCl salt) ; MW: 360.90 ;
Dorzolamide EP Impurity B Dorzolamide Impurity B :

(4RS,6SR)-4-(Ethylamino)-6-methyl-5,6-dihydro-4H-thieno[2, 3-b]thiopyran-2-sulfonamide 7,7-dioxide HCl ; CAS : 120279-37-0 ; C10H17ClN2O4S3 ; MW: 360.90 ;
Dorzolamide EP Impurity C Dorzolamide Impurity C :

[2-[[(4S,6S)-6-Methyl-7,7-dioxo-2sulfamoyl-4,5,6,7-tetrahydro-7λ6 -thieno[2,3-b]thiopyran-4yl]amino]ethyl]boronic acid ; C10H17BN2O6S3 ; MW: 368.26 ;
Dorzolamide EP Impurity D Dorzolamide Impurity D:

(4S,6S)-4-Amino-6-methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-dioxide HCl ; CAS : 154154-90-2 (base) ; 164455-27-0 (HCl salt) ; C8H13ClN2O4S3 ; MW: 332.85 ;
Dorzolamide HCl Dorzolamide HCl:

(4S,6S)-4-(Ethylamino)-6-methyl-5,6-dihydro-4H-thieno[2,3-b]thiopyran-2-sulfonamide 7,7-dioxide hydrochloride ; CAS : 130693-82-2 ; C10H17ClN2O4S3 ; MW: 360.90 ;