PRODUCT NAME: Methotrexate EP Impurity K
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	MEX-002
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	4271-30-1
Mol. Formula	C₁₂H₁₄N₂O₅
Molecular Wt	266.25
IUPAC	(2S)-2-[(4-aminobenzoyl)amino]pentanedioic acid
Synonyms	N-(p-Aminobenzoyl)glutamic Acid; N-(p-Aminobenzoyl)-L(+)-glutamic Acid;EP Methotrexate Impurity K
Long Term Storage Condition	-20°C, Hygroscopic
Handling instruction	Sample COA

Test	Results
Appearance	White to Light Beige Waxy Solid to 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	Aqueous Base (Sparingly), Aqueous Acid (Slightly), DMSO (Slightly), Methanol (Sl
Purity	NLT BY 97.0%(T)
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