Impurity-15

CAS No: 824-75-9
Chemical Name:
4-fluorobenzamide
Molecular Formula:
C7H6FNO

Impurity-16

CAS No: 456-22-4
Chemical Name:
4-fluorobenzoic acid
Molecular Formula:
C7H5FO2

Impurity-17

CAS No: 459-23-4
Chemical Name:
(E)-4-fluorobenzaldehyde oxime
Molecular Formula:
C7H6FNO

Impurity-10

CAS No: 1194-02-1
Chemical Name:
p-Fluoro benzonitrile
Molecular Formula:
C7H4FN

Impurity-11

CAS No: 876728-37-9
Chemical Name:
3-((1H-1,2,4-triazol-1-yl)methyl)benzonitrile
Molecular Formula:
C10H8N4

Impurity-12

CAS No: NA
Chemical Name:
2-((1H-1,2,4-triazol-1-yl)methyl)benzonitrile
Molecular Formula:
C10H8N4

Impurity-13

CAS No: NA
Chemical Name:
4-fluorobenzohydrazide
Molecular Formula:
C7H7FN2O

Impurity-14

CAS No: 459-57-4
Chemical Name:
4-fluorobenzaldehyde
Molecular Formula:
C7H5FO

Monoamide impurity

CAS No: 2500927-47-7
Chemical Name:
4-((4-Cyanophenyl)(1H-1,2,4-triazol-1-yl)methyl)benzamide
Molecular Formula:
C17H13N5O

Diamide

CAS No: 2170106-13-3
Chemical Name:
4,4'-((1H-1,2,4-Triazol-1-yl)methylene)dibenzamide
Molecular Formula:
C17H15N5O2

Impurity-9

CAS No: 748812-17-1
Chemical Name:
4-Amino-1-(4-cyanobenzyl)-1H-1,2,4-triazol-4-ium bromide
Molecular Formula:
C10H10BrN5

3-Cyano Letrozole

CAS No: NA
Chemical Name:
3,4'-((1H-1,2,4-triazol-1-yl)methylene)dibenzonitrile
Molecular Formula:
C17H11N5

2-Cyano Letrozole

CAS No: NA
Chemical Name:
2,4'-((1H-1,2,4-triazol-1-yl)methylene)dibenzonitrile
Molecular Formula:
C17H11N5

Impurity-5

CAS No: 305961-48-7
Chemical Name:
4-(di(1H-1,2,4-triazol-1-yl)methyl)benzonitrile
Molecular Formula:
C12H9N7

Impurity-6

CAS No: 17201-43-3
Chemical Name:
4-(bromomethyl)benzonitrile
Molecular Formula:
C8H6BrN

Impurity-7

CAS No: 28188-41-2
Chemical Name:
3-(bromomethyl)benzonitrile
Molecular Formula:
C8H6BrN

Impurity-8

CAS No: 22115-41-9
Chemical Name:
2-(bromomethyl)benzonitrile
Molecular Formula:
C8H6BrN

Diacid impurity

CAS No: 1644566-39-1
Chemical Name:
4,4'-((1H-1,2,4-Triazol-1-yl)methylene)dibenzoic acid
Molecular Formula:
C17H13N3O4

Impurity-4

CAS No: 584-13-4
Chemical Name:
4-amino-4H-1,2,4-Triazole
Molecular Formula:
C2H4N4

Impurity-1

CAS No: 112809-25-3
Chemical Name:
4-((1H-1,2,4-Triazol-1-yl)methyl)benzonitrile
Molecular Formula:
C10H8N4

Impurity-2

CAS No: 112809-27-5
Chemical Name:
4-((4H-1,2,4-Triazol-4-yl)methyl)benzonitrile
Molecular Formula:
C10H8N4

Dibromo impurity

CAS No: 67013-55-2
Chemical Name:
4-(dibromomethyl)benzonitrile
Molecular Formula:
C8H5Br2N

Impurity-3

CAS No: 61-82-5
Chemical Name:
3-amino-1H-1,2,4-Triazole
Molecular Formula:
C2H4N4

Reference standared

CAS No: 112809-51-5
Chemical Name:
4,4'-(1H-1,2,4-Triazol-1-ylmethylene)dibenzonitrile
Molecular Formula:
C17H11N5

EP impurity B

CAS No: 113402-31-6
Chemical Name:
4,4',4?-Methanetriyltribenzonitrile
Molecular Formula:
C22H13N3