PRODUCT NAME: Leflunomide EP Impurity D
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	LFN-001
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	42831-50-5
Mol. Formula	C₅H₅NO₃
Molecular Wt	127.10
IUPAC	5-methyl-1,2-oxazole-4-carboxylic acid
Synonyms	5-Methyl-4-isoxazolecarboxylic Acid
Long Term Storage Condition	Refrigerator
Handling instruction	Sample COA

Test	Results
Appearance	White to Pale Brown 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	DMSO (Slightly), Methanol (Slightly)
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