PRODUCT NAME: Alvimopan Impurity 25
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	AVP-028
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	2184736-45-4
Mol. Formula	C15H21NO6S
Molecular Wt	343.4 g/mol
IUPAC	Ethyl (R)-(2-benzyl-3-((methylsulfonyl)oxy)propanoyl)glycinate
Synonyms	Ethyl (R)-(2-benzyl-3-((methylsulfonyl)oxy)propanoyl)glycinate; (R)-Ethyl 2-(2-benzyl-3-((methylsulfonyl)oxy)propanamido)acetate
Long Term Storage Condition	-20°C or lower
Handling instruction	Sample COA

Test	Results
Appearance	colorless to pale yellow viscous oil
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