PRODUCT NAME: Letrozole EP Impurity B
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	LET-004
Lot Number	Sample COA
Batch Quantity	Sample COA
CAS Number	113402-31-6
Mol. Formula	C22H13N3
Molecular Wt	319.4
Long Term Storage Condition	2-8 °C for long term storage	Handling instruction	Sample COA
IUPAC	4-[bis(4-cyanophenyl)methyl]benzonitrile
Chemical Name	Letrozole EP Impurity B
Synonyms	Methanetriyltribenzonitrile, 4,4',4''-; Letrozole; 4,4',4''-Methanetriyltribenzonitrile (USP);

Test	Results
Appearance	Off-White to Light Yellow Solid
Identification by 1H NMR	Sample COA
Identification By IR	Sample COA
Mass (ESI)	Sample COA
Purity	98%+
Wt. Loss by TGA	Sample COA
% Potency	Sample COA
Solubility
QC Release Date	Sample COA
Attachments	Sample COA
Note: This material can be used as a referance standard and is for research purpose ONLY and not for human consumption