Impurity Reference Standard - Products

Letrozole

CAT No: CL-LTZ-01 CAS No: 112809-51-5 Mol Wt: 285.3 Mol F: C17H11N5 Inv Status: Custom Synthesis

Chemical Name: 4,4'-(1H-1,2,4-Triazol-1-ylmethylene)dibenzonitrile

Letrozole EP Impurity A

CAT No: CL-LTZ-02 CAS No: 112809-52-6 Mol Wt: 285.3 Mol F: C17H11N5 Inv Status: Custom Synthesis

Chemical Name: 4,4'-(4H-1,2,4-Triazol-4-ylmethylene)dibenzonitrile

Letrozole EP Impurity B

CAT No: CL-LTZ-03 CAS No: 113402-31-6 Mol Wt: 319.4 Mol F: C22H13N3 Inv Status: Custom Synthesis

Chemical Name: 4,4',4-Methanetriyltribenzonitrile"

Letrozole Impurity C

CAT No: CL-LTZ-04 CAS No: 112809-25-3 Mol Wt: 184.2 Mol F: C10H8N4 Inv Status: Custom Synthesis

Chemical Name: 4-((1H-1,2,4-Triazol-1-yl)methyl)benzonitrile

Carbinol Metabolite Of Letrozole

CAT No: CL-LTZ-05 CAS No: 134521-16-7 Mol Wt: 234.3 Mol F: C15H10N2O Inv Status: Custom Synthesis

Chemical Name: 4,4'-(Hydroxymethylene)dibenzonitrile

Letrozole Diacid

CAT No: CL-LTZ-06 CAS No: 1644566-39-1 Mol Wt: 325.3 Mol F: C17H15N3O4 Inv Status: Custom Synthesis

Chemical Name: 4,4'-((1H-1,2,4-Triazol-1-yl)methylene)dibenzoic acid

Letrozole Diamide

CAT No: CL-LTZ-07 CAS No: 2170106-13-3 Mol Wt: 323.4 Mol F: C17H17N5O2 Inv Status: Custom Synthesis

Chemical Name: 4,4'-((1H-1,2,4-Triazol-1-yl)methylene)dibenzamide

Letrozole Impurity 1

CAT No: CL-LTZ-09 CAS No: 100442-33-9 Mol Wt: 297.4 Mol F: C20H27NO Inv Status: Custom Synthesis

Chemical Name: 4-((4-Bromophenyl)(1H-1,2,4-triazol-1-yl)methyl)benzonitrile

Letrozole Monoacid Impurity

CAT No: CL-LTZ-10 CAS No: NA Mol Wt: 304.3 Mol F: C17H12N4O Inv Status: Custom Synthesis

Chemical Name: 4-((4-Cyanophenyl)(1H-1,2,4-triazol-1-yl)methyl)benzoic acid

Letrozole Mono-Amide Impurity

CAT No: CL-LTZ-11 CAS No: 2500927-47-7 Mol Wt: 301.3 Mol F: C17H11N5O Inv Status: Custom Synthesis

Chemical Name: NA