C9H11NO3
181.19 g/mol
Food AdditiveWarning
DL-Tyrosine
CAS556-03-6EC209-113-1
Category
Food Additive
Compound Class
Natural Product
Primary Use
amino acid dietary supplement
DL-Tyrosine is an amino acid compound used as a dietary supplement. It contains both an aromatic ring and polar functional groups, contributing to its role in nutrition.
dietary supplementamino acid fortification
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
ReferenceSame Category
(+)-L-alliin
CAS556-27-4
dietary supplement and nutritional additive
ReferenceSame Category
Magnesium propionate
CAS557-27-7
food additive magnesium salt
ReferenceSame Category
Zinc acetate
CAS557-34-6
Food and feed additive
ReferenceSame Category
Glycine
CAS56-40-6
buffering agent and nutrient
Referencestereoisomer of
L-tyrosine
CAS60-18-4
nutritional supplement and flavoring agent
Referencestereoisomer of
L-4-Hydroxyphenyl-2,3,5,6-d4-alanine
CAS62595-14-6
research compound
Referencestereoisomer of
Tyrosine disodium
CAS69847-45-6
cell culture medium supplement
Referencestereoisomer of
L-(β,β-²H₂)Tyrosine
CAS72963-27-0
research compound
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for DL-Tyrosine (CAS 556-03-6) is 2922.50.
HS code (international, 6-digit)
2922.50
EU CN code (8-digit)
2922 50 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
2-amino-3-(4-hydroxyphenyl)propanoic acid
InChIKey
OUYCCCASQSFEME-UHFFFAOYSA-N
SMILES
C1=CC(=CC=C1CC(C(=O)O)N)O
Synonyms (27)
- (.+-.)-Tyrosine
- (2s)-tyrosine
- Benzenepropanoic acid, (S)-
- DL-Tyrosine
- DL-Tyrosine 25GR
- DL-Tyrozine
- H-DL-Tyr-OH
- L-TYROSINE, [1-14C]-
- L-Tryosine
- L-Tyrosine, non animal origin
- Tyrosine, DL-
- dl-p-tyrosine
- tyrosin
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