C9H11NO3
181.19 g/mol
Food AdditiveWarning
L-tyrosine
CAS60-18-4EC200-460-4
Category
Food Additive
Compound Class
Natural Product
Primary Use
nutritional supplement and flavoring agent
L-Tyrosine is a conditionally essential amino acid used by cells to synthesize proteins. It was first discovered in cheese protein by German chemist Justus von Liebig in 1846.
nutritional supplementflavoring agent
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
ApplicationSame Use
Phenylalanine
CAS63-91-2
nutritional supplement and flavoring agent
ApplicationSame Use
L-leucine zwitterion
CAS61-90-5
nutritional supplement and flavoring agent
ApplicationSame Use
L-serine zwitterion
CAS56-45-1
nutritional supplement and flavoring agent
ReferenceSame Category
Linoleic acid
CAS60-33-3
dietary supplement and fatty acid
ReferenceSame Category
Α-ketobutyric acid
CAS600-18-0
Flavoring agent
ReferenceSame Category
Creatine monohydrate
CAS6020-87-7
dietary supplement for muscle energy
ReferenceSame Category
L-threonine hemihydrate
CAS6028-28-0
nutritional supplement and food additive
Referencestereoisomer of
L-4-Hydroxyphenyl-2,3,5,6-d4-alanine
CAS62595-14-6
research compound
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for L-tyrosine (CAS 60-18-4) 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
(2S)-2-amino-3-(4-hydroxyphenyl)propanoic acid
InChIKey
OUYCCCASQSFEME-QMMMGPOBSA-N
SMILES
C1=CC(=CC=C1C[C@@H](C(=O)O)N)O
Synonyms (82)
- L-TYR-OH
- T-9010
- L-Tyrosine, United States Pharmacopeia (USP)
- L-Tyrosine, from non-animal source, meets EP, USP testing specifications, suitable for cell culture
- Levodopa EP Impurity B
- Levodopa EP Impurity B; Cystine EP Impurity A; N-Acetyltyrosine EP Impurity A
- Tyrosine (USP/INN)
- Tyrosine, European Pharmacopoeia (EP)
- (S)-Tyrosine
- 2csm
- 3-(4-Hydroxyphenyl)-L-alanine
- 3-(p-Hydroxyphenyl)alanine
- 4-Hydroxy-L-phenylalanine
- 4ts1
- Benzenepropanoate
- H-Tyr
- H-Tyr-OH
- L-Phenylalanine, 4-hydroxy-
- L-Tyr
- L-Tyrosin
- L-Tyrosine (9CI)
- L-Tyrosine (JP18)
- L-Tyrosine (Standard)
- L-Tyrosine 7427
- L-Tyrosine High
- L-Tyrosine High 7428
- L-Tyrosine non-animal source
- L-Tyrosine, SAJ special grade
- L-Tyrosine, Vetec(TM)
- L-Tyrosine, monomer
- L-[U-14C]Tyr
- L-p-Tyrosine
- L-tyrosine
- L-tyrosine zwitterion
- LEVODOPA IMPURITY B
- N-ACETYLTYROSINE IMPURITY A
- TYROSINE [MART.]
- TYROSINE, (L)
- Tirosina [Spanish]
- Tyrosine (L-Tyrosine)
- Tyrosine (VAN)
- Tyrosine CRS
- Tyrosine, L- (8CI)
- Tyrosinum
- Tyrosinum [Latin]
- beta-(p-Hydroxyphenyl)alanine
- p-Tyrosine
- para-tyrosine
- plovamer-acetate
- tirosina
- tyr
- tyrosine
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