N-Acetyl-L-tyrosine
CAS 537-55-3
EC 208-671-3
Formula C11H13NO4
MW 223.23 g/mol
Amino Acids & Peptides Personal Care & CosmeticsPharmaceuticals & Healthcare Antioxidant & StabilizerUV Protection & Stabilization
Description
N-Acetyl-L-tyrosine (CAS 537-55-3), also known as AC-TYR-OH, N-AC-L-TYR, acetyltyrosine, and AC-tyrosine, is the acetylated derivative of the amino acid L-tyrosine. It carries no assigned E-code. The acetyl group increases its stability and solubility compared to the parent amino acid.
In personal care formulations, it functions as a skin conditioner and protectant by supporting the skin's natural barrier and acting as a free-radical scavenger to limit oxidative damage. It also absorbs UV radiation, making it relevant in sun care and daily moisturiser formulations where photoprotection is required alongside conditioning activity.
N-Acetyl-L-tyrosine is supplied as a crystalline solid and is available in cosmetic and pharmaceutical grades, with material traceable to Ph.Eur. and REACH compliance requirements. It is classified under HS code 29242990. Standard packaging formats include kilogram quantities suitable for laboratory and pilot-scale procurement.
In personal care formulations, it functions as a skin conditioner and protectant by supporting the skin's natural barrier and acting as a free-radical scavenger to limit oxidative damage. It also absorbs UV radiation, making it relevant in sun care and daily moisturiser formulations where photoprotection is required alongside conditioning activity.
N-Acetyl-L-tyrosine is supplied as a crystalline solid and is available in cosmetic and pharmaceutical grades, with material traceable to Ph.Eur. and REACH compliance requirements. It is classified under HS code 29242990. Standard packaging formats include kilogram quantities suitable for laboratory and pilot-scale procurement.
Physical Properties
| Melting Point | 85 °C |
| Boiling Point | 364.51°C (rough estimate) |
| Density | 1.2446 (rough estimate) |
| Appearance | solid |
| Color | White to Off-White |
| Form | Crystalline |
| Water Solubility | Soluble in water (25 mg/ml), and ethanol. |
| Refractive Index | 1.4960 (estimate) |
| Log P | 1.320 |
Safety & Handling (Learn More)
Danger GHS05
H
H318
P
P280P317P264+P265P305+P354+P338
Trade & Regulatory
| HS Code | 29242990 |
| Storage Class | 11 - Combustible Solids |
| WGK (Germany) | 3 |
Other Names
(2S)-2-acetamido-3-(4-hydroxyphenyl)propanoic acidMelanowhite-AAcetyl tyrosineN-acetyltyrosinNALTTyr-ExcelAC-TYR-OHN-AC-L-TYR
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