DL-Methionine

Independent reference data for DL-Methionine (CAS 59-51-8), compiled from public chemistry databases.

Registry identifiers across databases

Computed descriptors

Physicochemical values on record

Documented uses on record

An essential amino acid; Used therapeutically as an antidote for acetaminophen poisoning and a urinary acidifier; [Merck Index] Used as a flavoring agent and nutritional supplement; [FDA]EPA Safer Chemical Functional Use Classes -> Enzymes and Enzyme Stabilizers

Synonyms and trade names

DL-METHIONINE; 59-51-8; Racemethionine; Acimetion; Lobamine; Urimeth; (+-)-Methionine; DL-Methioninum; Methionine, DL-; 2-amino-4-methylsulfanylbutanoic acid; 2-amino-4-(methylsulfanyl)butanoic acid; FEMA No. 3301; Methionine, amorphous; Methionine DL-; DL-2-Amino-4-(methylthio)-butyric acid; DTXSID9020821

Regulatory listings held on file

Regulatory & Food Contact	EU Flavoring substances FDA Substance added to food: FLAVOR ENHANCER, FLAVORING AGENT OR ADJUVANT, NUTRIENT SUPPLEMENT Flavoring Agents FLAVOURING_AGENT: Flavouring Agent Savory No safety concern at current levels of intake when used as a flavouring agent
GHS notification summary	99% (197 / 199)

GHS hazard classification

GHS notification summary	99% (197 / 199)

This chemical does not meet GHS hazard criteria for 99% (197 of 199) of all reports.

Reported as not meeting GHS hazard criteria by 197 of 199 companies (only 1% companies provided GHS information). For more detailed information, please visit ECHA C&L website.

What the public record says

DL-Methionine is identified by CAS 59-51-8, molecular formula C5H11NO2S and molecular weight 149.05 g/mol. UNII 73JWT2K6T3; ChEBI 16811; InChIKey FFEARJCKVFRZRR-UHFFFAOYSA-N. Boiling Point: 300.00 to 301.00 °C. @ 760.00 mm Hg; Melting Point: 281 °C; Solubility: 32.7 mg/mL at 25 °C.

Physical description and handling notes

Source: PubChem / Wikidata; the batch COA governs where values differ.