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

Catalogue Number	RAB-012
Lot Number	Sample COA
Batch Quantity	Sample COA
CAS Number	615-16-7
Mol. Formula	C₇H₆N₂O
Molecular Wt	134.14
Long Term Storage Condition	2-8°C Refrigerator	Handling instruction	Sample COA
IUPAC	1,3-dihydrobenzimidazol-2-one
Chemical Name	Rabeprazole EP Impurity K
Synonyms	2-Hydroxybenzimidazole; 1,3-Dihydro-2H-benzimidazol-2-one; 2-Benzimidazolinone; 2,3-Dihydro-2-oxo-1H-benzimidazole; 2-Benzimidazolol; 2-Benzimidazolone;N,N'-(1,2-Phenyleneurea); o-Phenyleneurea; Lansoprazole EP Impurity D

Test	Results
Appearance	Pale Yellow to Brown Solid
Identification by 1H NMR	Sample COA
Identification By IR	Sample COA
Mass (ESI)	Sample COA
Purity	>98.0%(N)
Wt. Loss by TGA	Sample COA
% Potency	Sample COA
Solubility	Chloroform (Slightly), DMSO (Sparingly), Methanol (Slightly)
QC Release Date	Sample COA
Attachments	Sample COA
Note: This material can be used as a referance standard and is for research purpose ONLY and not for human consumption