PRODUCT NAME: Alfacalcidol Impurity 19
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	ALF-018
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	NA
Mol. Formula	C33H58O2Si
Molecular Wt	514.9 g/mol
IUPAC	(1R,3aR,5S,7aR,Z)-4-((E)-2-((S)-5-((Tert-butyldimethylsilyl)oxy)-2-methylenecyclohexylidene)ethylidene)-7a-methyl-1-((R)-6-methylheptan-2-yl)octahydro
Synonyms	(1R,3aR,5S,7aR,Z)-4-((E)-2-((S)-5-((Tert-butyldimethylsilyl)oxy)-2-methylenecyclohexylidene)ethylidene)-7a-methyl-1-((R)-6-methylheptan-2-yl)octahydro-1H-inden-5-ol
Long Term Storage Condition	2-8°C Refrigerator
Handling instruction	Sample COA

Test	Results
Appearance	white to off-white crystalline 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
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