DL-Tyrosine

CAS No.：556-03-6

Important Notice

This product is a chemical product/pharmaceutical intermediate. It is not a drug, an active pharmaceutical ingredient (API), or a pharmaceutical-grade material. It has not been granted a drug approval number or a Chemical Drug Substance Approval Notice, has not passed drug-related review and approval, and is not manufactured, tested, or released in accordance with pharmaceutical GMP.
This product is intended solely for non-clinical research, process development, quality studies, further chemical processing, or chemical synthesis. It must not be used in drug-product manufacturing, clinical trials, clinical diagnosis, or administration to humans or animals, or be sold, used as an input, submitted for regulatory filing, or released as an API or pharmaceutical material.
The purchaser must not use this product, or supply it to another party, for personal consumption, sports or fitness, weight loss, health supplements, food, or animal feed.

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DL-Tyrosine Basic information

Product Name:	DL-Tyrosine
Synonyms:	(±)-3-(p-Hydroxyphenyl)alanine;rac-(R*)-2-Amino-3-(p-hydroxyphenyl)propionic acid;DL-Tyrosine,99%;DL-TYROSINE extrapure CHR;(±)-2-Amino-3-(4-hydroxyphenyl)propionic acid, 3-(4-Hydroxyphenyl)-DL-alanine;(à)-2-Amino-3-(4-hydroxyphenyl)propionic acid;DL-α-AMino-β-p-hydroxyphenylpropionic acid;DL-Tyrosine, 99% 25GR
CAS:	556-03-6
MF:	C9H11NO3
MW:	181.19
EINECS:	209-113-1
Product Categories:	Amino Acids;Amino Acids and Derivatives;Tyrosine [Tyr, Y];alpha-Amino Acids;Amino Acids;Biochemistry
Mol File:	556-03-6.mol

DL-Tyrosine Chemical Properties

Melting point	≥300 °C (lit.)
Boiling point	314.29°C (rough estimate)
density	1.2375 (rough estimate)
refractive index	1.5270 (estimate)
storage temp.	Store at RT.
solubility	Aqueous Acid (Slightly), Methanol (Slightly), Water (Slightly)
form	Crystalline
pka	pK1:2.18(+1);pK2:9.11(0);pK3:10.6(OH) (25°C)
color	White to Off-White
Water Solubility	Soluble in water.
Merck	14,9839
BRN	515881
Stability:	Stable. Incompatible with strong oxidizing agents.
CAS DataBase Reference	556-03-6(CAS DataBase Reference)
NIST Chemistry Reference	2-Amino-3-(4-hydroxyphenyl)-propanoic acid(556-03-6)
EPA Substance Registry System	Tyrosine (556-03-6)

Safety Information

Hazard Codes	Xi
Risk Statements	36/37/38
Safety Statements	26-36
WGK Germany	3
TSCA	Yes
HS Code	29225000

MSDS Information

Provider	Language
DL-Tyrosine	English
SigmaAldrich	English
ACROS	English
ALFA	English

DL-Tyrosine Usage And Synthesis

Chemical Properties	white powder
Uses	The tyrosine of this diet was labeled by adding to it an amount of synthetic, isotopic dl-tyrosine cor- responding to twice that already present in the food. Incorporation of total C14 into muscle protein was reduced in 186-day infected mice fed dl-tyrosine-2-C-14 as compared to muscle proteins obtained from noninfected animals.

DL-Tyrosine Preparation Products And Raw materials

Raw materials	2,3-Butanedione-->Erythromycin Estolate-->L-Tyrosine
Preparation Products	D-Tyrosine

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