DL-Tyrosine

Synonym(s):(±)-2-Amino-3-(4-hydroxyphenyl)propionic acid;3-(4-Hydroxyphenyl)-DL-alanine

CAS NO.：556-03-6
Empirical Formula: C9H11NO3
Molecular Weight: 181.19
MDL number: MFCD00063074
EINECS: 209-113-1
SAFETY DATA SHEET (SDS)
Update Date: 2024-11-04 20:04:50

What is DL-Tyrosine?

Chemical properties

white powder

The Uses of DL-Tyrosine

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.

Definition

ChEBI: Tyrosine is an alpha-amino acid that is phenylalanine bearing a hydroxy substituent at position 4 on the phenyl ring. It has a role as a Daphnia magna metabolite. It is an alpha-amino acid, a polar amino acid and an aromatic amino acid. It contains a 4-hydroxybenzyl group. It is functionally related to a propionic acid. It is a conjugate base of a tyrosinium. It is a conjugate acid of a tyrosinate(1-).

Properties of DL-Tyrosine

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)
pka	pK1:2.18(+1);pK2:9.11(0);pK3:10.6(OH) (25°C)
form	Crystalline
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 for DL-Tyrosine

Signal word	Warning
Pictogram(s)	Exclamation Mark Irritant GHS07
GHS Hazard Statements	H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation
Precautionary Statement Codes	P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P304+P340:IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P405:Store locked up.