D-Tyrosine
Also known as: (2R)-2-amino-3-(4-hydroxyphenyl)propanoic acid, (R)-2-Amino-3-(4-hydroxyphenyl)propanoic acid, H-D-Tyr-OH, D-p-Tyrosine, 3-(4-Hydroxyphenyl)-D-alanine, D-α-Amino-β-p-hydroxyphenyl propionic acid, D-α-Amino-p-hydroxyhydrocinnamic acid, D-4-Hydroxyphenylalanine, D-β-p-Hydroxyphenyl-alanine
D-Tyrosine (CAS 556-02-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H11NO3 and a molecular weight of 181.189 g/mol. Key properties include a melting point of 310-314ºC, a boiling point of 385.2±32.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 186.7±25.1 °C. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 556-02-5
- Jingsj CID
- J-31960-8
- Molecular Formula
- C9H11NO3
- Molecular Weight
- 181.189 g/mol
- Category
- Organic Acids
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Melting Point | 310-314ºC |
|---|---|
| Boiling Point | 385.2±32.0 °C at 760 mmHg |
| Density | 1.3±0.1 g/cm3 |
| Flash Point | 186.7±25.1 °C |
| Exact Mass | 181.073898 |
| PSA | 83.55000 |
| LogP | 0.38 |
| Vapor Pressure | 0.0±0.9 mmHg at 25°C |
| Refractive Index | 1.614 |
GHS Safety & Compliance
- H315 — Causes skin irritation
- H319 — Causes serious eye irritation
- H335 — May cause respiratory irritation
Activity & Biological Data
| Target | Tyrosinase[1] |
|---|---|
| Additional Information | [1]. Jisu Park, et al. D-tyrosine Negatively Regulates Melanin Synthesis by Competitively Inhibiting Tyrosinase Activity. Pigment Cell Melanoma Res. 2018 May;31(3):374-383. [2]. Cong Yu, et al. Inhibition of Biofilm Formation by D-tyrosine: Effect of Bacterial Type and D-tyrosine Concentration. Water Res. 2016 Apr 1;92:173-9. |
Customs & Trade Information
| HS Code | 2922509090 |
|---|---|
| Summary | 2922509090. other amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0% |
Frequently Asked Questions
What is the CAS number of D-Tyrosine?
The CAS number of D-Tyrosine is 556-02-5.
What are the molecular formula and molecular weight of D-Tyrosine?
D-Tyrosine has molecular formula C9H11NO3 and molecular weight 181.189 g/mol.
Is D-Tyrosine hazardous?
D-Tyrosine has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.
What are the upstream and downstream products of D-Tyrosine?
For D-Tyrosine, Upstream Products: 4-Hydroxyphenylpyruvic acid, 3-bromotyrosine, L-Phenylalanine; Downstream Products: Methyl L-tyrosinate hydrochloride, 2-fluoro-3-(4-hydroxyphenyl)propanoic acid, D-Tyrosine methyl ester hydrochloride.
Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "D-Tyrosine (CAS 556-02-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-31960-8 (accessed 2026-11-09).
Data for reference only; verify product details with suppliers before purchase.