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

Catalogue Number	OST-007
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	2413185-84-7
Mol. Formula	C16H29N5O4
Molecular Wt	355.43 g/mol
IUPAC	Light Brownish Gummy Liquid
Synonyms	Oseltamivir 2-Azido Impurity; (1R,2R,3S,4R,5S)-Ethyl 4-acetamido-5-amino-2-azido-3-(pentan-3-yloxy)cyclohexanecarboxylate
Long Term Storage Condition	2-8°C Refrigerator
Handling instruction	Sample COA

Test	Results
Appearance	Light Brownish Gummy Liquid
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	NLT 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