DL-3-(3,4-Dihydroxyphenyl)alanine

DL-3-(3,4-二羟苯基)丙氨酸

Also known as: DL-DOPA, 3,4-Dihydroxy-DL-phenylalanine, DL-3,4-Dihydroxyphenylalanine, 3-Hydroxy-DL-tyrosine, DL-Dihydroxyphenylalanine, DL-beta-(3,4-Dihydroxyphenyl)alanine, NSC 16940, DL-4,5-Dihydroxyphenylalanine

DL-3-(3,4-Dihydroxyphenyl)alanine (CAS 63-84-3) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C9H11NO4 and a molecular weight of 197.18800 g/mol. It is also known as DL-DOPA, 3,4-Dihydroxy-DL-phenylalanine and DL-3,4-Dihydroxyphenylalanine. Key properties include a melting point of 270-272ºC(lit.), a boiling point of 448.39ºC at 760 mmHg, a density of 1.468 g/cm3 and a flash point of 224.978ºC. GHS signal word: Warning. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
63-84-3
Jingsj CID
J-5236-6
Molecular Formula
C9H11NO4
Chinese Name
DL-3-(3,4-二羟苯基)丙氨酸
Molecular Weight
197.18800 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Melting Point270-272ºC(lit.)
Boiling Point448.39ºC at 760 mmHg
Density1.468 g/cm3
Flash Point224.978ºC

GHS Safety & Compliance

IrritantSignal word: Warning

Frequently Asked Questions

What is the CAS number of DL-3-(3,4-Dihydroxyphenyl)alanine?

The CAS number of DL-3-(3,4-Dihydroxyphenyl)alanine is 63-84-3.

What are the molecular formula and molecular weight of DL-3-(3,4-Dihydroxyphenyl)alanine?

DL-3-(3,4-Dihydroxyphenyl)alanine has molecular formula C9H11NO4 and molecular weight 197.18800 g/mol.

Is DL-3-(3,4-Dihydroxyphenyl)alanine hazardous?

DL-3-(3,4-Dihydroxyphenyl)alanine has GHS signal word Warning.

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

Last updated:

How to cite: Jingsj. "DL-3-(3,4-Dihydroxyphenyl)alanine (CAS 63-84-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-5236-6 (accessed 2026-10-22).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.