454-41-1

Basic information

• Product Name: DL-METHIONINE SULFOXIDE
• Synonyms: DL-METHIONINE SULFOXIDE;DL-METHIONINE SULPHOXIDE;DL-2-AMINO-4(METHYLSULFINYL)BUTANOIC ACID;2-amino-4-(methylsulfinyl)-butanoicaci;2-amino-4-(methylsulfinyl)butanoicacid;2-amino-4-(methylsulfinyl)-butyricaci;2-amino-4-(methylsulfinyl)butyricacid;2-amino-4-(methylsulphinyl)butyric acid
• CAS NO: 454-41-1
• Molecular Formula: C₅H₁₁NO₃S
• Molecular Weight: 165.21
• EINECS: 263-700-7
• Product Categories: Amino Acids
• Mol File: 454-41-1.mol
• Article Data: 2

Chemical Properties

• Melting Point: ~240 °C (dec.)
• Appearance: /solid
• Density: 1.183 (estimate)
• Refractive Index: 1.5216 (estimate)
• CAS DataBase Reference: DL-METHIONINE SULFOXIDE(CAS DataBase Reference)
• NIST Chemistry Reference: DL-METHIONINE SULFOXIDE(454-41-1)
• EPA Substance Registry System: DL-METHIONINE SULFOXIDE(454-41-1)

Safety Data

• WGK Germany: 3
• RTECS: ES7120000
• Hazardous Substances Data: 454-41-1(Hazardous Substances Data)

Usage

Chemical Properties

white to slightly off-white crystalline powder

Purification Methods

Likely impurities are dl-methionine sulfone and dl-methionine. Crystallise the sulfoxide by dissolving it in hot H2O and adding excess EtOH. [Lepp & Dunn Biochemical Preparations 4 80 1955, Micheel & Schmitz Chem Ber 72 518 1939, Beilstein 4 III 1650, 4 IV 3192.]

InChI:InChI=1/C18H28O3S.C5H11NO2S/c1-3-4-5-6-7-8-11-22(19)15(2)12-16-9-10-17-18(13-16)21-14-20-17;1-9-3-2-4(6)5(7)8/h9-10,13,15H,3-8,11-12,14H2,1-2H3;4H,2-3,6H2,1H3,(H,7,8)

Upstream product

• 59-51-8 DL-methionine 
• 63-68-3 L-(+)-Methionine 

Relevant articles and documents

Oxidation by chlorine dioxide of methionine and cysteine derivatives to sulfoxides

Methionine and cysteine derivatives were oxidized asymmetrically by chlorine dioxide to sulfinyl derivatives.