PRODUCT NAME: Rosuvastatin Impurity 21
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	ROS-034
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	154026-92-3
Mol. Formula	C10H17ClO4
Molecular Wt	236.7 g/mol
IUPAC	tert-butyl (S)-6-chloro-5-hydroxy-3-oxohexanoate
Synonyms
Long Term Storage Condition	-20°C Freezer, Under inert atmosphere
Handling instruction	Sample COA

Test	Results
Appearance	Pale Yellow to Pale Brown
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	Chloroform (Slightly), Methanol (Slightly)
Purity	NLT 97%
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