PRODUCT NAME: Tacrolimus Regioisomer
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	TRL-003
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	131944-48-4
Mol. Formula	C44H69NO12
Molecular Wt	804.02
IUPAC	(1R,9S,12R,13E,15S,16S,19R,20E,23S,25S,26R,27R,29R)-1,16-dihydroxy-12-[(1R,3S,4R)-4-hydroxy-3-methoxycyclohexyl]-25,27-dimethoxy-13,15,21,23,29-pentam
Synonyms	(E/Z)-FK-506 26,28-Allylic Ester Rearrangement Impurity;[3R-[3R*(1R*,3R*,4R*),4E,6S*,7S*,10R*,11E,14S*,16S*,17R*,18S*,20R*,21R*,28aS*]]-7,8,10,13,14,15,16,17,18,19,20,21,26,27,28,28a-Hexadecahydro-7,21-dihydroxy-3-(4-hydroxy-3-methoxycyclohexyl)-16,18-dimethoxy-4,6,12,14,20-pentamethyl-10-(2-propenyl)-17,21-epoxy-3H-pyrido[2,1-c][1,4]oxaazacyclopentacosine-1,9,22,23(6H,25H)-tetrone; Tacrolimus Impurity D
Long Term Storage Condition	2-8°C Refrigerator
Handling instruction	Sample COA

Test	Results
Appearance	Off White 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	Chloroform (Slightly), Methanol (Slightly)
Purity	95.17 % by HPLC
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