Impurity Standards

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Efavirenz Penteneyne Impurity

Product Code:
DH/ERZ/ 1008
Molecular Formula:
C14H9ClF3NO2
CAS Number:
NA
Molecular Weight:
315.71
Synonyms: (S)-6-Chloro-4-(3-methylbut-3-en-1-yn-1-yl)-4-(trifluoromethyl)-1H-benzo[d][1,3]oxazin-2(4H)-one


Efavirenz Enantiomer Impurity

Product Code:
DH/ERZ/ 1009
Molecular Formula:
C14H9ClF3NO2
CAS Number:
NA
Molecular Weight:
315.67
Synonyms: : (R)- 6-chloro-4-(cyclopropylethynyl)-1,4-dihydro-4-(trifluoromethyl)-2H-3,1-benzoxazin -2-one


Efavirenz pent-3-ene-1-yne Analog (Cis & Trans)

Product Code:
DH/ERZ / 1010
Molecular Formula:
C14H9ClF3NO2
CAS Number:
NA
Molecular Weight:
315.67
Synonyms: (RS)-6-Chloro-4-(pent-3-en-1-ynyl)-4-(trifluoromethyl)-1H-benzo[d][1,3]oxazin-2(4H)-one


Entacapone EP Impurity A

Product Code:
DH/ENT/1001
Molecular Formula:
C14H15N3O5
CAS Number:
145195-63-7
Molecular Weight:
305.29
Synonyms: (2Z)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)-N,N-diethyl-2-propenamide


Entacapone EP Impurity B

Product Code:
DH/ENT/1002
Molecular Formula:
C12H10N2O6
CAS Number:
N/A
Molecular Weight:
278.22
Synonyms: Ethyl (2E)-2-Cyano-3-(3,4-dihydroxy-5-nitrophenyl)prop-2-enoate


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