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

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

Test	Results
Appearance	Off-White to Light Yellow Solid
Water content by KF/TGA	Sample COA
% Potency = [100 - (Water content by KF)] X HPLC Purity)] / 100	Sample COA
Identification by HNMR	Sample COA
Identification By IR	Sample COA
Mass (ESI)	Sample COA
Solubility
Purity	98%+
Analysis Date (Release Date)	Sample COA
Attachments	Sample COA
Other Information	Sample COA
Note: This material can be used as a referance standard and is for research purpose ONLY and not for human consumption