L-Methionine, methyl ester, hydrochloride
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L-Methionine, methyl ester, hydrochloride
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CAS No:
2491-18-1
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Formula:
C6H13NO2S.ClH
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Chemical Name:
L-Methionine, methyl ester, hydrochloride
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Synonyms:
L-Methionine,methyl ester,hydrochloride (1:1);L-Methionine,methyl ester,hydrochloride;Methionine,methyl ester,hydrochloride,L-;Methionine methyl ester hydrochloride;Methyl (S)-methioninate hydrochloride;(S)-Methionine methyl ester hydrochloride;Methyl L-methioninate hydrochloride;NSC 522231;(S)-2-Amino-4-methylsulfanylbutanoic acid methyl ester hydrochloride
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CAS No:
L-Methionine, methyl ester, hydrochloride Basic Attributes
199.7
199.043381
3913214
219-651-9
29309090
Characteristics
77.6
1.74210
White to beige Powder
1.094g/cm3
159-161 °C
277.6ºC at 760 mmHg
121.7ºC
26 ° (C=1, H2O)
soluble in water.
−20°C
0.0388mmHg at 25°C
26 º (c=5, H2O 24 ºC)
Safety Information
NONH for all modes of transport
3
36/37/38
24/25-26
Xi
P261-P305 + P351 + P338
H315-H319-H335
L-Methionine, methyl ester, hydrochloride Use and Manufacturing
Synthesis \ , L-Methionine (0.5g, 1 equivalent) was suspended in methanol (30ml C = 0.1M) in a 100ml flask equipped with a magnetic stirrer and placed under nitrogen. Thionyl chloride (0.5ml, 2 equivalents) was added to the solution dropwise at 0°C then heated under reflux for 16 hours. The reaction mixture was then evaporated to yield a pale yellow solid. The solid was triturated with hot diethyl ether and the solution discarded to leave the title compound 2 as a white solid which was further dried under vacuum. (0.65561 g, 98percent yield).L-Methionine (0.5 g, 1 equivalent) was suspended in methanol (30 ml C=0.1M) in a 100 ml flask equipped with a magnetic stirrer and placed under nitrogen. Thionyl chloride (0.5 ml, 2 equivalents) was added to the solution dropwise at 0° C. then heated under reflux for 16 hours. The reaction mixture was then evaporated to yield a pale yellow solid. The solid was triturated with hot diethyl ether and the solution discarded to leave the title compound 2′ a white solid which was further dried under vacuum. (0.65561 g, 98percent yield). [0377] Using the general methyl esterification conditions, L-methionine (8, 2.00 g, 13.4 mmol) was treated with thionyl chloride (2.00 mL, 26.8 mmol) in methanol(20 mL) to afford the title compound as a white powder (1.95 g, 89percent); νmax (KBr pellet): 3080 (s), 1747(s), 2840 (w), 1236 (s); δH (300 MHz, CDClGeneral procedure: This compound has previously been described
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L-Methionine, methyl ester, hydrochloride
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