Top Suppliers:I want be here
Related CAS#:
117992-53-7 304446-56-8
450342-86-6 332370-73-7
863001-09-6 851406-45-6
577981-49-8 690645-21-7
536718-26-0 953253-48-0

63-68-3

63-68-3 structure
63-68-3 structure
  • Name: L-Methionine
  • Chemical Name: L-methionine
  • CAS Number: 63-68-3
  • Molecular Formula: C5H11NO2S
  • Molecular Weight: 149.211
  • Catalog: Organic raw materials Organic sulfur compound
  • Create Date: 2018-06-01 08:00:00
  • Modify Date: 2026-06-30 02:18:12
  • L-Methionine is the L-isomer of Methionine, an essential amino acid for human development. Methionine acts as a hepatoprotectant.
Name L-methionine
Synonyms (S)-2-Amino-4-(methylmercapto)butyric acid, L-2-Amino-4-(methylthio)butanoic acid
S-methionine
gamma-methylthio-alpha-aminobutyricacid
gamma-Methylthio-alpha-aminobutyric acid
L-Methionine(Food ade)
(S)-2-amino-4-(methylthio)-Butanoic acid
lactet
L-α-Amino-γ-methylmercaptobutyric acid
(L)-Methionine
γ-methylthio-α-aminobutyricacid
Methionine (M)
Met-bNA
2-Amino-4-methylthiobutanoic acid (S)-
Methionine, L- (8CI)
Butanoic acid, 2-amino-4-(methylthio)-, (S)
(2S)-2-amino-4-(methylsulfanyl)butanoic acid
L-Methionine (H-Met-OH)
L-Methionine, Animal-Free
neo-methidin
N-L-Methionyl-2-naphthylamine
N-L-Methionyl-2-naphthylamin
L-2-AMINO-4-METHYLMERCAPTOBUTYRIC ACID
L-LOBAMINE
L-Methionine G1D3981.00mg/mg(ai)
L-Methionine, (Titration: anhydrous basis)
(2S)-2-Amino-4-methylsulfanylbutanoic acid
Methionine
L-METHIONINE
L-METHIONINE (13C5,15N)
butanoicacid,2-amino-4-(methylthio)-,(S)
L(-)-Methionin
L-Methionine,(S)-2-Amino-4-(methylmercapto)butyric acid, L-2-Amino-4-(methylthio)butanoic acid
L-METHIONINERESECH ADE
l(-)-amino-gamma-methylthiobutyricacid
METHYL-13CH3)
L-METHIONINE, ADE, >= (
L(-)-Amino-gamma-methylthiobutyric acid
(+)-L-METHIONINE
l-alpha-amino-gamma-methylthiobutyricacid
2-Amino-4-methylthiobutanoic acid
L-Methionine Aji92/24
L-Methionine, R
(S)-(-)-Methionine
Met
L-Methionine (JP15)
L-Methionin
MFCD00063097
L-METHIONINE (13C5,)
2-amino-4-methylthiobutanoicacid
EINECS 200-562-9
l-gamma-methylthio-alpha-aminobutyricacid
2-AMINO-4-METHYLMERCAPTOBUTYRIC ACID
Methionine (VAN)
L-Met-OH
L-gamma-Methylthio-alpha-aminobutyric acid
Butyric acid, 2-amino-4-(methylthio)
s-methyl-l-homocystein
L-homocysteine,S-methyl
(S)-2-Amino-4-(methylmercapto)butyric acid, L-2-Amino-4-(methilthio)butanoic acid
METHIONINE, L
L-a-Amino-g-methylmercaptobutyric Acid
H-Met-OH
Methionine (USP)
METHIONINE
2-amino-4-(methylthio)-butyricaci
L-Methionyl b-naphthylamide
L-Methionine Z
Methionine Solution (M)
l-alpha-amino-gamma-methylmercaptobutyricacid
L-Methionine, extra
Methionine b-naphthylamide
Cymethion
Acimethin
L-BANTHIONINE
l-met
L-METHIONINE (1,2,3,C4
L-2-Amino-3-methylthiobuttersαure
L-alpha-Amino-gamma-methylmercaptobutyric acid
L-MET
Description L-Methionine is the L-isomer of Methionine, an essential amino acid for human development. Methionine acts as a hepatoprotectant.
Related Catalog
Target

Human Endogenous Metabolite

Density 1.2±0.1 g/cm3
Boiling Point 306.9±37.0 °C at 760 mmHg
Melting Point 284 °C (dec.)(lit.)
Molecular Formula C5H11NO2S
Molecular Weight 149.211
Flash Point 139.4±26.5 °C
Exact Mass 149.051056
PSA 88.62000
LogP 0.37
Vapour Pressure 0.0±1.4 mmHg at 25°C
Index of Refraction 1.531
Water Solubility Soluble

CHEMICAL IDENTIFICATION

RTECS NUMBER :
PD0457000
CHEMICAL NAME :
Methionine, L-
CAS REGISTRY NUMBER :
63-68-3
LAST UPDATED :
199710
DATA ITEMS CITED :
24
MOLECULAR FORMULA :
C5-H11-N-O2-S
MOLECULAR WEIGHT :
149.23
WISWESSER LINE NOTATION :
QVYZ2S1 -L

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
36 gm/kg
TOXIC EFFECTS :
Behavioral - changes in motor activity (specific assay) Immunological Including Allergic - uncharacterized
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
4328 mg/kg
TOXIC EFFECTS :
Lungs, Thorax, or Respiration - dyspnea Nutritional and Gross Metabolic - body temperature decrease
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
>9500 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
21600 mg/kg/60D-I
TOXIC EFFECTS :
Liver - changes in liver weight Blood - leukopenia Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - true cholinesterase
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
26100 mg/kg
SEX/DURATION :
female 10-20 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus) Reproductive - Specific Developmental Abnormalities - musculoskeletal system
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
14720 mg/kg
SEX/DURATION :
female 10-20 day(s) after conception
TOXIC EFFECTS :
Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants)
TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Oral
DOSE :
35 gm/kg
SEX/DURATION :
female 2 week(s) pre-mating female 1-21 day(s) after conception
TOXIC EFFECTS :
Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)

MUTATION DATA

TEST SYSTEM :
Rodent - guinea pig
DOSE/DURATION :
500 mg/kg
REFERENCE :
JCLBA3 Journal of Cell Biology. (Rockefeller Univ. Press, 1230 York Ave., New York, NY 10003) V.12- 1962- Volume(issue)/page/year: 47,190a,1970 *** REVIEWS *** TOXICOLOGY REVIEW JAFCAU Journal of Agricultural and Food Chemistry. (American Chemical Soc., Distribution Office Dept. 223, POB 57136, West End Stn., Washington, DC 20037) V.1- 1953- Volume(issue)/page/year: 22,2,1974 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-RUSSIA:STEL 5 mg/m3 JAN 1993 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 81891 No. of Facilities: 273 (estimated) No. of Industries: 5 No. of Occupations: 17 No. of Employees: 12017 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 81891 No. of Facilities: 1116 (estimated) No. of Industries: 4 No. of Occupations: 18 No. of Employees: 28520 (estimated) No. of Female Employees: 17038 (estimated)
Personal Protective Equipment Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes F
Risk Phrases R33
Safety Phrases S24/25
RIDADR NONH for all modes of transport
WGK Germany 2
RTECS PD0457000
HS Code 2930400000
HS Code 2930400000
The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.

Chemsrc provides CAS#:63-68-3 MSDS, density, melting point, boiling point, structure, formula, molecular weight, synthetic route, etc.
title: CAS No. 63-68-3 | Chemsrc address: https://m.chemsrc.com/en/baike/947049.html

Home | MSDS/SDS Database Search | Journals | Product Classification | Biologically Active Compounds | Selling Leads | About Us | Disclaimer

Copyright © 2026 ChemSrc All Rights Reserved