PRODUCT NAME: Levothyroxine beta-Hydroxy T4 Impurity
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	LEX-005
Item/Batch Number	Sample COA
Quantity	Sample COA
CAS Number	107849-54-7
Mol. Formula	C15H11I4NO5
Molecular Wt	792.87 g/mol
IUPAC	(2S)-2-amino-3-hydroxy-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoic acid
Synonyms	β-Hydroxy-T4; 2-Amino-3-hydroxy-3-(4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl)propanoic acid; O-(4-Hydroxy-3,5-diiodophenyl)-3,5-diiodo-β-hydroxy-l-tyrosine; β-Hydroxy-T4 (USP)
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
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