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DL-Methionine

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Name

DL-Methionine

EINECS 200-432-1
CAS No. 59-51-8 Density 1.206 g/cm3
Solubility 2.9 g/100 mL (20 °C) in water Melting Point 284 °C (dec.)(lit.)
Formula C5H11NO2S Boiling Point 306.9 °C at 760 mmHg
Molecular Weight 149.21 Flash Point 139.4 °C
Transport Information Appearance white crystalline powder with a faint odor
Safety 24/25-36-26 Risk Codes 33-36/37/38
Molecular Structure Molecular Structure of 59-51-8 (DL-Methionine) Hazard Symbols IrritantXi
Synonyms

Methilonin;Methionine, amorphous;Methionine, DL-;Hmet;Meonine;DL-Methioninum;Pedameth;2-amino-4-(methylsulfanyl)butanoic acid;(2S)-2-azaniumyl-4-methylsulfanyl-butanoate;(2R)-2-azaniumyl-4-methylsulfanyl-butanoate;Urimeth;Metione;2-amino-4-(methylthio)butanoic acid;Cynaron;Dyprin;Lobamine;(+-)-Methionine;Racemethionine [USAN];Neston;alpha-Amino-gamma-(methylthio)butyric acid;DL-2-Amino-4-(methylthio)-butyric acid;Acimetion;Banthionine;alpha-amino-gamma-methylmercaptobutyric acid;DL-2-Amino-4-(methylthio)butanoic acid;DL-2-Amino-4-methylthiobutyric acid;H-DL-Met-OH;Racemethionine;

 

DL-Methionine Chemical Properties

Molecular structure of Racemethionine (CAS NO.59-51-8) is:

Product Name: Racemethionine
CAS Registry Number: 59-51-8
IUPAC Name: 2-amino-4-methylsulfanylbutanoic acid
Molecular Weight: 149.21134 [g/mol]
Molecular Formula: C5H11NO2S
XLogP3: -1.9
H-Bond Donor: 2
H-Bond Acceptor: 3 
EINECS: 200-432-1
Melting Point: 284 °C (dec.)(lit.)
Water Solubility: 2.9 g/100 mL (20 °C)
Stability: Stable. Incompatible with strong oxidising agents. 
Surface Tension: 50.5 dyne/cm
Density: 1.206 g/cm3
Flash Point: 139.4 °C
Enthalpy of Vaporization: 60.21 kJ/mol
Boiling Point: 306.9 °C at 760 mmHg
Vapour Pressure: 0.00017 mmHg at 25°C
Product Categories: Amino Acids;Amino Acid Derivatives;Methionine [Met, M];Amino Acids

DL-Methionine Uses

 Racemethionine (CAS NO.59-51-8) is one of the twenty common amino acids.

DL-Methionine Toxicity Data With Reference

Organism Test Type Route Reported Dose (Normalized Dose) Effect Source
mouse LDLo intraperitoneal 1500mg/kg (1500mg/kg)   Yakuri to Chiryo. Pharmacology and Therapeutics. Vol. 5, Pg. 2041, 1977.
mouse LDLo intravenous 300mg/kg (300mg/kg)   Yakuri to Chiryo. Pharmacology and Therapeutics. Vol. 5, Pg. 2041, 1977.
mouse LDLo oral 4gm/kg (4000mg/kg)   Yakuri to Chiryo. Pharmacology and Therapeutics. Vol. 5, Pg. 2041, 1977.
rat LD intravenous > 400mg/kg (400mg/kg)   Yakuri to Chiryo. Pharmacology and Therapeutics. Vol. 5, Pg. 2041, 1977.
rat LD oral > 5gm/kg (5000mg/kg)   Yakuri to Chiryo. Pharmacology and Therapeutics. Vol. 5, Pg. 2041, 1977.
rat LDLo intraperitoneal 2gm/kg (2000mg/kg)   Yakuri to Chiryo. Pharmacology and Therapeutics. Vol. 5, Pg. 2041, 1977.

DL-Methionine Safety Profile

Moderately toxic by ingestion and other routes. An experimental teratogen. Experimental reproductive effects. When heated to decomposition it emits toxic fumes of SOx and NOx
Hazard Codes: IrritantXi
Risk Statements: 33-36/37/38 
R33:Danger of cumulative effects. 
R36/37/38:Irritating to eyes, respiratory system and skin.
Safety Statements: 24/25-36-26 
S24/25:Avoid contact with skin and eyes. 
S36:Wear suitable protective clothing. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice.
WGK Germany: 2
RTECS: PD0457000
F: 10-23

DL-Methionine Specification

 Racemethionine , its cas register number is 59-51-8. It also can be called (+-)-Methionine ; Acimetion ; Banthionine ; Cynaron ; DL-2-Amino-4-(methylthio)-butyric acid ; DL-Methioninum ; Dyprin ; Lobamine ; alpha-Amino-gamma-(methylthio)butyric acid ; alpha-Amino-gamma-methylmercaptobutyric acid ; alpha-Amino-gamma-methylmercaptobutyric acid (VAN) .It is a white crystalline powder with a faint odor.

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