PRODUCT NAME: L-Tyrosine Analytical Standard
Date of Mfg: Sample COA	RETEST DATE: Sample COA

Catalogue Number	GCS-972
Lot Number	Sample COA
Batch Quantity	Sample COA
CAS Number	60-18-4
Alternate CAS Number	Hydrochloride: 16870-43-2
Mol. Formula	C₉H₁₁NO₃
Molecular Wt	181.19 g/mol
Long Term Storage Condition	2-8°C Refrigerator	Handling instruction	Sample COA
IUPAC	(2S)-2-amino-3-(4-hydroxyphenyl)propanoic acid
Chemical Name	L-Tyrosine Analytical Standard
Synonyms	Levodopa - Impurity B ;L-Tyrosine;(-)-α-Amino-p-hydroxyhydrocinnamic Acid; Therigon; p-Tyrosine; (2S)-2-Amino-3-(4-hydroxyphenyl)propanoic Acid; (S)-2-Amino-3-(4-hydroxyphenyl)propanoic Acid; (S)-Tyrosine; (S)-α-Amino-4-hydroxybenzenepropanoic Acid; L-(-)-Tyrosine;Levodopa EP Impurity B

Test	Results
Appearance	White to Off-White Solid
Identification by 1H NMR	Sample COA
Identification By IR	Sample COA
Mass (ESI)	Sample COA
Purity	>98.5%(T)
Wt. Loss by TGA	Sample COA
% Potency	Sample COA
Solubility	Aqueous Acid (Slightly), Aqueous Base (Slightly)
QC Release Date	Sample COA
Attachments	Sample COA
Note: This material can be used as a referance standard and is for research purpose ONLY and not for human consumption