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DL-m-Tyrosine

Also known as: 3-(3-Hydroxyphenyl)-DL-alanine, DL-3-Tyrosine, DL-Meta-Tyrosine, 3-Hydroxy-DL-phenylalanine, 3-Hydroxyphenylalanine, D,L-M-TYR, D/L-3-hydroxy-phenylalanine, DL-3-OH-Phe, 2-amino-3-(3-hydroxyphenyl)propanoic acid, 2-ammonio-3-(3-hydroxyphenyl)propanoate, Phenylalanine, 3-hydroxy-, EINECS 212-270-9, MFCD00002597, UNII:45KGG1D4BI

DL-m-Tyrosine (CAS 775-06-4) 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 280-285 °C (dec.)(lit.), a boiling point of 387.2±32.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 188.0±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.
775-06-4
Jingsj CID
J-15472-3
Molecular Formula
C9H11NO3
Molecular Weight
181.189 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point280-285 °C (dec.)(lit.)
Boiling Point387.2±32.0 °C at 760 mmHg
Density1.3±0.1 g/cm3
Flash Point188.0±25.1 °C
Exact Mass181.073898
PSA83.55000
LogP0.38
Vapor Pressure0.0±0.9 mmHg at 25°C
Refractive Index1.614

GHS Safety & Compliance

IrritantSignal word: Warning
  • H315 — Causes skin irritation
  • H319 — Causes serious eye irritation
  • H335 — May cause respiratory irritation

Activity & Biological Data

Additional Information[1]. Schuster B, et al. The mechanism of action of phenylalanine ammonia-lyase: the role of prosthetic dehydroalanine. Proc Natl Acad Sci U S A. 1995 Aug 29;92(18):8433-7. [2]. Bertin C, et al. Grass roots chemistry: meta-tyrosine, an herbicidal nonprotein amino acid. Proc Natl Acad Sci U S A. 2007 Oct 23;104(43):16964-9.

Customs & Trade Information

HS Code2922509090
Summary2922509090. 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 DL-m-Tyrosine?

The CAS number of DL-m-Tyrosine is 775-06-4.

What are the molecular formula and molecular weight of DL-m-Tyrosine?

DL-m-Tyrosine has molecular formula C9H11NO3 and molecular weight 181.189 g/mol.

Is DL-m-Tyrosine hazardous?

DL-m-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 DL-m-Tyrosine?

For DL-m-Tyrosine, Upstream Products: DL-Phenylalanine, 3-Hydroxybenzaldehyde; Downstream Products: 3-Hydroxyphenethylamine, L-m-Tyrosine, 3-Hydroxy-D-phenylalanine.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "DL-m-Tyrosine (CAS 775-06-4)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-15472-3 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.