L-tyrosine
Description
L-Tyrosine (CAS 60-18-4), commonly abbreviated as Tyr, is a conditionally essential amino acid sourced through both fermentation and chemical synthesis for commercial supply. With FEMA number 3736, it functions as a bioactive building block in pharmaceutical formulations.
The material is used in nutritional products and cosmetic actives. Demand is driven by its role in protein synthesis and its precursor relationship to key metabolic compounds relevant across multiple industries.
In dietary supplements and functional nutrition, Tyr is formulated into capsules, powders, and sports nutrition blends targeting cognitive and physical performance support. Pharmaceutical manufacturers use it as an active ingredient and synthesis intermediate.
It is utilized in the production of thyroid-related compounds and specialty APIs. In food applications, it contributes to flavor development in aged cheeses and fermented products, recognized under FEMA 3736 for flavoring use.
Cosmetic formulators incorporate it into skin-brightening and melanin-modulating topical products. It acts on pigmentation pathways relevant to tone-evening formulations, providing versatile utility for personal care brands.
L-Tyrosine is supplied as a white crystalline powder in both food-grade and pharmaceutical-grade specifications. Established grades include USP, BP, and Ph. Eur., supporting use across regulated pharmaceutical and nutraceutical applications.
FCC-grade material is available for food and flavoring use, with bulk supply typically offered in kilogram to metric ton quantities. These standards ensure the highest purity for global distribution and manufacturing.
Physical Properties
| Melting Point | 344 °C |
| Boiling Point | 314.29°C (rough estimate) |
| Density | 0.01600 mol/L |
| Flash Point | 176 °C |
| Appearance | White to off-white powder |
| Color | White to Pale-brown |
| Odor | odorless |
| Form | powder |
| Water Solubility | 0.45 g/L (25 ºC) |
| Refractive Index | -12 ° (C=5, 1mol/L HCl) |
| pH | 6.5 (0.1g/l, H2O) |
| Log P | 0.38 |
Safety & Handling (Learn More)
Trade & Regulatory
| HS Code | 29225000 |
| WGK (Germany) | 3 |
Documentation
Other Names
4-hydroxy-L-phenylalanine|(S)-α-amino-4-hydroxybenzenepropanoic acid|(S)-tyrosine|(S)-alpha-amino-4-hydroxybenzenepropanoic acid|(S)-3-(p-hydroxyphenyl)alanine|(S)-2-amino-3-(p-hydroxyphenyl)propionic acid|(2S)-2-azanyl-3-(4-hydroxyphenyl)propanoic acid|(2S)-2-amino-3-(4-hydroxyphenyl)propionic acid|Tyr
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