Letrozole Impurities

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Impurity structure Parent Drug Name Name of Impurity Catalogue No. CAS No.
Carbinol Metabolite of Letrozole Letrozole

Carbinol Metabolite of Letrozole

VE0015899 134521-16-7
Letrozole Diacid Impurity Letrozole

Letrozole Diacid Impurity

VL2730003 1644566-39-1
Letrozole Diamide Letrozole

Letrozole Diamide

VE0018098 2170106-13-3
Letrozole EP Impurity B Letrozole

Letrozole EP Impurity B

VL2730004 113402-31-6
Letrozole Impurity 3 Letrozole

Letrozole Impurity 3

VE0018177 N/A
Letrozole Impurity C Letrozole

Letrozole Impurity C

VE0015900 112809-25-3
Letrozole N-Oxide Letrozole

Letrozole N-Oxide

VL2730001 N/A
Letrozole Related Compound A Letrozole

Letrozole Related Compound A

VL2730002 112809-52-6
Letrozole-D4 Letrozole

Letrozole-D4

DVE00749 1133712-96-5
4-Descyano-4-bromo-Letrozole Letrozole

4-Descyano-4-bromo-Letrozole

VE0015901 143030-54-0
4,4'-Dicyanobenzophenone Letrozole

4,4'-Dicyanobenzophenone

VE0018524 32446-66-5