PRODUCT NAME: (R)-b-(Boc-amino)-2,4-difluor0benzenebutanoic Acid
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	SIT-006
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	851307-12-5
Mol. Formula	C₁₅H₁₉F₂NO₄
Molecular Wt	315.31
Synonyms	(3R)-4-(2,4-Difluorophenyl)-3-[(2-methylpropan-2-yl)oxycarbonylamino]butanoic Acid; (3R)-3-[(tert-Butoxycarbonyl)amino]-4-(2,4-difluorophenyl)butanoic Acid; Sitagliptin Defuoro Impurity 3; Sitagliptin Defluoro Impurity 3;
Long Term Storage Condition	2-8°C Refrigerator
Handling instruction	Sample COA

Test	Results
Appearance	Pale White 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	No Data Available
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