Amino Acids & Peptides REACH

n-acetyl-L-tyrosine

CAS Number

537-55-3

EC Number

208-671-3

Abbreviation

NALT

Industries: Personal Care & Cosmetics

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What is n-acetyl-L-tyrosine?

N-Acetyl-L-Tyrosine (CAS 537-55-3), or NALT, is the acetylated derivative of L-tyrosine with improved water solubility compared to the free amino acid.

Where is n-acetyl-L-tyrosine used?

Parenteral and clinical nutrition: incorporated into intravenous amino acid solutions, delivering therapeutic tyrosine levels without precipitation
Pharmaceutical manufacturing: bioavailable amino acid source and stabilizing excipient in sensitive peptide-based drug formulations
Cosmetics: antioxidant and UV-stabilizing agent in serums, creams and photoprotective products
Oral dietary supplements: capsules and powders targeting cognitive support, marketed for the acetylated form's absorption profile

Commercial specifications

Bulk quantities for industrial formulation; smaller quantities for R&D and quality testing

Other Names (Synonyms)

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What are the physical properties of n-acetyl-L-tyrosine?

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

How is n-acetyl-L-tyrosine classified and handled safely? Learn More

Danger

GHS05· Corrosive

Hazard Statements

H318 Causes serious eye damage

Precautionary Statements

P280 Wear protective gloves/protective clothing/eye protection/face protection.

P317 Get emergency medical help.

P264+P265 Wash … thoroughly after handling.

P305+P354+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.

Which trade and regulatory codes apply to n-acetyl-L-tyrosine?

HS Code 29242990

Storage Class 11 - Combustible Solids

WGK (Germany) 3