Methionine derivatives

Methionine is a sulfur-containing amino acids. Methionine has lipotropic action as choline, because the methyl need be supplied by methionine when synthesize choline in vivo, and choline is a component for lecithin which is essential for transporting fatty out of liver and removing the depositional fatty of the liver. In addition, methionine supply sulfur to synthesize non-exogenous amino acid in vivo, while the latter has a detoxifying effect. Therefore this drug is used for the liver lipotropic in clinical medicine. This medicine applies with fatty liver and chronic hepatitis, cirrhosis accompanied with fatty infiltration of the liver. It still be clinically used as a poisoning adjuvant therapy of alcohol and sulfa.

The scientific name is methylthio butyric acid, one of the essential amino acids. It is a white flaky crystal or crystalline powder with a specific odor. The molecular weight is 149.21. The melting point of DL- methionine (racemic) is 281 ℃ (decomposition). The relative density is 1.340. DL- methionine is soluble in water, dilute acid and alkali, slightly soluble in 95% ethanol, and insoluble in ether. The melting point of L- methionine (L-body) is 280 ~ 281 ℃ (decomposition). L- methionine is soluble in hot water and dilute alcohol, insoluble in absolute ethanol, ethyl ether, petroleum ether, benzene and acetone. The melting point of D- methionine (D-body) is 273 ℃ (decomposition).D- methionine is soluble in water, dilute acid and alkali; very slightly soluble in alcohol, and insoluble in ether. Usually right-handed amino acids in biochemistry have low biological effects while methionine is an exception. D- methionine and L- methionine are effective  accelerator which is due to the D- methionine can be converted into L- methionine in vivo. Therefore synthetic DL- methionine does not require separation and can be used directly. Methionine is an essential amino acid in animal body and a component for proteins. It can maintain the body's growth and nitrogen balance. It can not be synthesized in the body of animals and must be acquired in the form of amino acids or proteins from in vitro supply. It is an important feed additive (nutritional supplements).In the food sector, Methionine mainly make a complex flavor with glycine alanine valine glutamic acid and other amino acids. In medicine, it is a main component of amino acid infusion liquid and amino acid complex preparation. It is also used for prevention and treatment of liver disease and arsenic, benzene poisoning. It also act as a protein nutritional supplements for the patients who are lack of protein or absorb protein inadequately. These protein is derived from acrolein and methyl mercaptan synthesis. It may also be acquired by casein hydrolysis and purification.

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Structure Chemical Name CAS MF
L-Methionine methyl ester hydrochloride L-Methionine methyl ester hydrochloride 2491-18-1 C6H14ClNO2S
N-Acetyl-DL-methionine N-Acetyl-DL-methionine 1115-47-5 C7H13NO3S
H-D-MET-OME HCL H-D-MET-OME HCL 69630-60-0 C6H14ClNO2S
FMOC-L-Methionine FMOC-L-Methionine 71989-28-1 C20H21NO4S
BOC-D-Methionine BOC-D-Methionine 5241-66-7 C10H19NO4S
N-Acetyl-L-methionine N-Acetyl-L-methionine 65-82-7 C7H13NO3S
BOC-MET(O)-OH BOC-MET(O)-OH 34805-21-5 C10H19NO5S
Fmoc-Met-OH Fmoc-Met-OH 112883-40-6 C20H21NO4S
N-CARBOBENZOXY-DL-METHIONINE N-CARBOBENZOXY-DL-METHIONINE 4434-61-1 C13H17NO4S
N-Cbz-L-methionine N-Cbz-L-methionine 1152-62-1 C13H17NO4S
Ademetionine disulfate tosylate Ademetionine disulfate tosylate 97540-22-2 C22H34N6O16S4
BOC-L-Methionine BOC-L-Methionine 2488-15-5 C10H19NO4S
L-METHIONINE SULFOXIMINE L-METHIONINE SULFOXIMINE 15985-39-4 C5H12N2O3S
Z-D-MET-OH Z-D-MET-OH 28862-80-8 C13H17NO4S
Ethyl L-methionate hydrochloride Ethyl L-methionate hydrochloride 2899-36-7 C7H16ClNO2S
N-Acetyl-D-methionine N-Acetyl-D-methionine 1509-92-8 C7H13NO3S
S-ADENOSYL-L-METHIONINE S-ADENOSYL-L-METHIONINE 17176-17-9 C15H22N6O5S
DL-METHIONINE SULFONE DL-METHIONINE SULFONE 820-10-0 C5H11NO4S
H-MET-OIPR HCL H-MET-OIPR HCL 85391-05-5 C8H18ClNO2S
Zinc methionine sulfate Zinc methionine sulfate 56329-42-1 C5H11NO6S2Zn
L-METHIONINE METHYLSULFONIUM IODIDE L-METHIONINE METHYLSULFONIUM IODIDE 34236-06-1 C6H16INO2S2
ethyl DL-methionate hydrochloride ethyl DL-methionate hydrochloride 6297-53-6 C7H16ClNO2S
S-ADENOSYL-L-METHIONINE P-TOLUENESULFONATE SALT S-ADENOSYL-L-METHIONINE P-TOLUENESULFONATE SALT 86562-85-8 C22H30N6O8S2
L-METHIONINE SULFOXIDE L-METHIONINE SULFOXIDE 3226-65-1 C5H11NO3S
BZ-MET-NH2 BZ-MET-NH2 52811-71-9 C12H16N2O2S
DL-ALANYL-DL-METHIONINE DL-ALANYL-DL-METHIONINE 1999-43-5 C8H16N2O3S
DABSYL-L-METHIONINE DABSYL-L-METHIONINE 97684-99-6 C19H24N4O4S2
BOC-DL-MET-OH BOC-DL-MET-OH 93000-03-4 C10H19NO4S
N-Methyl-L-Methionine N-Methyl-L-Methionine 42537-72-4 C6H13NO2S
N-BENZOYL-DL-METHIONINE N-BENZOYL-DL-METHIONINE 4703-38-2 C12H15NO3S
N-BSMOC-L-METHIONINE N-BSMOC-L-METHIONINE 197245-29-7 C15H17NO6S2
S-ADENOSYL-L-METHIONINE IODIDE SALT S-ADENOSYL-L-METHIONINE IODIDE SALT 3493-13-8 C15H23IN6O5S
N-FORMYL-L-METHIONINE N-FORMYL-L-METHIONINE 4309-82-4 C6H11NO3S
DL-METHIONINE SULFOXIDE DL-METHIONINE SULFOXIDE 62697-73-8 C5H11NO3S
H-MET-OTBU HCL H-MET-OTBU HCL 91183-71-0 C9H20ClNO2S
S-ADENOSYL-L-METHIONINE DISULFATE TOSYLATE S-ADENOSYL-L-METHIONINE DISULFATE TOSYLATE C29H42N6O19S5
BOC-MET-OH DCHA BOC-MET-OH DCHA 22823-50-3 C22H42N2O4S
DL-Selenomethionine DL-Selenomethionine 1464-42-2 C5H11NO2Se
S-ADENOSYL-L-METHIONINE CHLORIDE SALT S-ADENOSYL-L-METHIONINE CHLORIDE SALT 24346-00-7 C15H23ClN6O5S
DL-METHIONINE SULFOXIDE DL-METHIONINE SULFOXIDE 454-41-1 C5H11NO3S
MEOSUC-AAPM-PNA MEOSUC-AAPM-PNA 70967-91-8 C27H38N6O9S
Ademetionine 1,4-butanedisulfonate Ademetionine 1,4-butanedisulfonate 101020-79-5 C42H74N12O28S8
B581 B581 149759-96-6 C22H38N4O3S2
D-METHIONINE METHYL ESTER D-METHIONINE METHYL ESTER 21691-49-6 C6H13NO2S
N-(2,4-DINITROPHENYL)-L-METHIONINE DICYCLOHEXYLAMMONIUM SALT N-(2,4-DINITROPHENYL)-L-METHIONINE DICYCLOHEXYLAMMONIUM SALT C23H36N4O6S
H-ILE-ILE-GLY-LEU-MET-OH H-ILE-ILE-GLY-LEU-MET-OH 149385-65-9 C25H47N5O6S
H-D-MET-OET HCL H-D-MET-OET HCL 7512-43-8 C7H16ClNO2S
THENOYL METHIONATE THENOYL METHIONATE 60752-63-8 C10H13NO3S2
Iron methionine Iron methionine C15H30FeN3O6S3
L-METHIONINE (15N) L-METHIONINE (15N) 82572-25-6 C5H11NO2S
POLY-L-METHIONINE POLY-L-METHIONINE 26062-47-5 C5H11NO2S
5'-[[(3S)-3-Amino-3-carboxypropyl]methylsulfonio]-5'-deoxyadenosine inner salt, 1,4-butanedisulfonate 5'-[[(3S)-3-Amino-3-carboxypropyl]methylsulfonio]-5'-deoxyadenosine inner salt, 1,4-butanedisulfonate 200393-05-1 C15H22N6O5S.C4H10O6S2
N-[4-(TRIFLUOROMETHYL)BENZOYL]-L-METHIONINE METHYL ESTER N-[4-(TRIFLUOROMETHYL)BENZOYL]-L-METHIONINE METHYL ESTER 175202-25-2 C14H16F3NO3S
PTH-METHIONINE PTH-METHIONINE 4370-90-5 C12H14N2OS2
TYR-D-ALA-GLY-PHE-MET ACOH H2O TYR-D-ALA-GLY-PHE-MET ACOH H2O 100929-62-2 C30H43N5O10S
O-benzyl-L-methionine toluene-p-sulphonate O-benzyl-L-methionine toluene-p-sulphonate 68739-90-2 C19H25NO5S2
N-Acetyl-DL-methionine-15N N-Acetyl-DL-methionine-15N C7H13NO3S
Selenium (as Selenomethionine) Selenium (as Selenomethionine)
DL-METHIONINE SULFOXIDE DL-METHIONINE SULFOXIDE 4241-59-2 C5H11NO3S
N-ACETYL-L-SELENOMETHIONIN N-ACETYL-L-SELENOMETHIONIN 210910-25-1 C7H13NO3Se
bis(DL-methioninato-N,O)copper bis(DL-methioninato-N,O)copper 15170-74-8 C10H18CuN2O4S2
Chromium Methionine Chromium Methionine C15H30CrN3O6S3
SODIUM DODECYL SULFATE SODIUM DODECYL SULFATE 12768-45-5 C12H25NaO4S
D,L-α-HYDROXYMETHIONINE CALCIUM D,L-α-HYDROXYMETHIONINE CALCIUM
N-[2-[2-(4-fluorophenyl)ethyl]-5-[[[(2S,4S)-4-[(3-pyridinylcarbonyl)thio]-2-pyrrolidinyl]methyl]amino]benzoyl]-L-Methionine  1-methylethyl  ester N-[2-[2-(4-fluorophenyl)ethyl]-5-[[[(2S,4S)-4-[(3-pyridinylcarbonyl)thio]-2-pyrrolidinyl]methyl]amino]benzoyl]-L-Methionine 1-methylethyl ester 345915-10-8 C34H41FN4O4S2
MAGNESIUM ACETYLMETHIONATE MAGNESIUM ACETYLMETHIONATE 105883-49-6 C14H24MgN2O6S2
S-adenosylmethionine S-adenosylmethionine 485-80-3 C15H23N6O5S
Manganese Methionine Manganese Methionine C10H20MnN2O4S2
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