DL-Alanine

CAS 302-72-7

DL-Alanine is an amino acid used as a flavouring and a nutrient. It tastes faintly sweet, which is unusual among amino acids.

Where it is and isn’t permitted

Status of DL-Alanine by jurisdiction. Every jurisdiction this site covers is listed, including those where the substance does not appear.
JurisdictionStatusScope and limitsCitation
United StatesFood and Drug AdministrationPermitted, with conditions21 CFR 172.540retrieved 2026-09-07
Codex AlimentariusCodex Alimentarius Commission / JECFANot listedDoes not appear on this jurisdiction’s permitted list. That is not the same as being prohibited.

What it is made from

Produced by chemical synthesis, giving both mirror-image forms; the L form alone is made by fermentation.

  • Vegan
  • Vegetarian
CAS registry number
302-72-7
InChIKey
QNAYBMKLOCPYGJ-UHFFFAOYSA-N
PubChem
CID 602

Every name it appears under

70 recorded names. A label may use any of them.

E number

  • E639

CAS registry number

  • 1222-66-8
  • 26367-45-3
  • 302-72-7
  • 463-40-1
  • 56-41-7

As it appears in regulation

  • DL-Alanine

Other names

  • (+-)-2-Aminopropionic acid
  • (+-)-Alanine
  • (+/-)-2-AMINOPROPANOIC ACID
  • (+/-)-2-Aminopropionic acid
  • (.+/-.)-Alanine
  • (DL)-Alanine
  • (R)-(-)-2-AMINOPROPIONIC ACID
  • (R,S)-2-Amino-propionicacid
  • (R,S)-2-Aminopropionic acid
  • (R,S)-Alanine
  • (RS)-2-Aminopropionsaeure
  • (S)-2-Aminopropionic acid
  • (S)-2-Aminopropionic acid;L-a-Aminopropionic acid
  • .alpha.-Alanine
  • .alpha.-Aminopropionic acid
  • 2-Amino propanoic acid
  • 2-amino-propionic acid
  • ALA
  • alanin
  • Alanine #
  • ALANINE DL-FORM [MI]
  • ALANINE, .alpha.
  • Alanine, DL
  • Alanine, DL-
  • Alanine, L isomer
  • Alanine, L-isomer
  • CCRIS 8596
  • D,L-Alanine
  • D,LAlanine
  • D-2-Aminopropionic acid; (R)-2-Aminopropionic acid
  • DL-.alpha.-Alanine
  • dl-.alpha.-Aminopropionic acid
  • DL-2-Aminopropanoic acid
  • DL-2-Aminopropionic acid
  • DL-Ala
  • DL-Alanine
  • DL-Alanine, >=99% (HPLC)
  • DL-Alanine, >=99%, FCC, FG
  • DL-Alanine, FCC, >=99%
  • DL-alpha-Alanine
  • DL-alpha-Aminopropionic acid
  • DL2Aminopropanoic acid
  • DL2Aminopropionic acid
  • DLalphaAlanine
  • DLalphaAminopropionic acid
  • FEMA NO. 3818
  • H-DL-Ala-OH
  • L(+)-Alanine
  • L-.alpha.-Alanine
  • L-.alpha.-Aminopropionic acid
  • L-alanine
  • L-ALANINE EXTRA PURE
  • L-Alanine, from non-animal source, suitable for cell culture
  • L-Alanine, USP, EP Grade
  • L-|A-Aminopropionic acid
  • Linolenic acid
  • Ochratoxin B
  • Propanoic acid, 2-amino-
  • rac-alanine

Systematic names

  • (2S)-2-aminopropanoic acid
  • (9Z,12Z,15Z)-octadeca-9,12,15-trienoic acid
  • 2-aminopropanoic acid
  • L-Alanine

Hazard reference values

No reference value for this substance in the sources we hold.

Evidence and how bodies read it

Studies, and the differing conclusions regulators drew from them, are curated by hand rather than machine-read, and none has been written for this substance yet.

Sources for this page

  • ecfr retrieved 2026-09-07

Full licence terms and publisher details on Sources. How this page is built and updated: Method.

Machine-readable:/api/v1/additives/dl-alanine.json