Impurity Standards

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Ezetimibe RRR-isomer

Product Code:
DH/EZT/1015
Molecular Formula:
C24H21F2NO3
CAS Number:
1593542-96-1
Molecular Weight:
409.43
Synonyms: (3R,4R)-1-(4-Fluorophenyl)-3-[(3R)-3-(4-fluorophenyl)-3-hydroxypropyl]-4-(4-hydroxyphenyl)azetidin-2-one


3'-Anhydro Ezetimibe

Product Code:
DH/EZT/1016
Molecular Formula:
C24H19F2NO2
CAS Number:
204589-68-4
Molecular Weight:
391.41
Synonyms: (3R,4S)-1-(4-Fluorophenyl)-3-[(2E)-3-(4-fluorophenyl)-2-propen-1-yl]-4-(4-hydroxyphenyl)-2-azetidinone;


Ezetimibe SSS-isomer

Product Code:
DH/EZT/1014
Molecular Formula:
C24H21F2NO3
CAS Number:
1593543-07-7
Molecular Weight:
409.43
Synonyms: (3S,4S)-1-(4-Flurophenyl)-3-[(S)-3-(4-Fluorophenyl)-3-hydroxypropyl]-4-(4-hydroxyphenyl)azetidin-2-one.


Famotidine EP Impurity A

Product Code:
DH/FTD/1001
Molecular Formula:
C8H16Cl2N6S2
CAS Number:
88061-72-7
Molecular Weight:
331.29
Synonyms: 3-[[[2-[(Diaminomethylene)amino]thiazol-4-yl]methyl]sulphanyl]propanimidamide dihydrochloride


Famotidine EP Impurity B

Product Code:
DH/FTD/1002
Molecular Formula:
C16H23N11O2S5
CAS Number:
89268-62-2
Molecular Weight:
C16H23N11O2S5
Synonyms: 3,5-bis[2-[[[2-[(Diaminomethylene)amino]thiazol-4-yl]methyl]sulphanyl]ethyl]-4H-1,2,4,6-thiatriazine 1,1-dioxide


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