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Dhamtec Pharma and Consultants-

Impurity Standards

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Efavirenz USP Related Compound C

Product Code:
DH/ERZ/1003		Molecular Formula:
C13H9ClF3N
CAS Number:
391860-73-4		Molecular Weight:
271.67
Synonyms: 6-Chloro-2-cyclopropyl-4-(trifluoromethyl)quino


rac Efavirenz

Product Code:
DH/ERZ/1004		Molecular Formula:
C14H9ClF3NO2
CAS Number:
177530-93-7		Molecular Weight:
315.67
Synonyms: (RS)-6-Chloro-4-(cyclopropylethynyl)-1,4-dihydro-4-(trifluoromethyl)-2H-3,1-benzoxazin-2-one


Efavirenz Amino Alcohol Bis ( Ethoxy carbonyl Impurity)

Product Code:
DH/ERZ/ 1005		Molecular Formula:
C19H19ClF3NO5
CAS Number:
NA		Molecular Weight:
433.81
Synonyms: (S)-Ethyl 4-chloro-2-[4-cyclopropyl-2-(ethoxycarbonyloxy)-1,1,1-trifluorobut-3-yn-2-yl) phenylcarbamate.


Efavirenz Benzoyle Amino Alcohol Impurity

Product Code:
DH/ERZ/ 1006		Molecular Formula:
C21H17ClF3NO3
CAS Number:
NA		Molecular Weight:
423.81
Synonyms: N-[4-Chloro-2-((S)-4-cyclopropyl-1, 1, 1-trifluoro-2-hydroxybut-3-yn-2-yl)phenyl]- 4-methoxybenzamide


Efavirenz Amino Alcohol Ethyl Carbamate

Product Code:
DH/ERZ/ 1007		Molecular Formula:
C16H15ClF3NO3
CAS Number:
NA		Molecular Weight:
361.74
Synonyms: Ethyl 4-chloro-2-((S)-4-cyclopropyl-1,1,1-trifluoro-2-hydroxybut-3-yn-2-yl)phenylcarbamate


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