PRODUCT NAME: Levothyroxine EP Impurity H
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	LEX-004
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	2055-97-2
Mol. Formula	C13H6I4O4
Molecular Wt	733.80 g/mol
IUPAC	4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzoic acid
Synonyms	"3,3',5,5'-Tetraiodothyroformic acid; Benzoic acid, 4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodo- Tetraiodothyroformic Acid; T4-Benzoic acid
Long Term Storage Condition	2-8°C Refrigerator
Handling instruction	Sample COA

Test	Results
Appearance	Pale Yellow to Light Brown 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 95%
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