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ChemicalBook--->CAS DataBase List--->55357-38-5

55357-38-5

55357-38-5 Structure

55357-38-5 Structure
IdentificationMore
[Name]

Choline tosylate
[CAS]

55357-38-5
[Synonyms]

[2-HYDROXYETHYL]TRIMETHYLAMMONIUM P-TOLUENESULFONATE SALT
CHOLINE P-TOLUENESULFONATE SALT
CHOLINE TOSYLATE
Choline 4-methylbenzenesulphonate salt
Choline 4-methylbenzenesulphonate salt 99%
2-Hydroxy-N,N,N-trimethyl-ethanaminium 4-methylbenzenesulfonic acid salt
Choline p-toluenesulfonate
[Molecular Formula]

C12H21NO4S
[MDL Number]

MFCD00079051
[Molecular Weight]

275.36
[MOL File]

55357-38-5.mol
Chemical PropertiesBack Directory
[Melting point ]

95°C
[storage temp. ]

Keep in dark place,Inert atmosphere,2-8°C
[Sensitive ]

Light Sensitive/Hygroscopic
[CAS DataBase Reference]

55357-38-5(CAS DataBase Reference)
Safety DataBack Directory
[Hazard Codes ]

Xi
[Risk Statements ]

R36/37/38:Irritating to eyes, respiratory system and skin .
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
[WGK Germany ]

3
[Hazard Note ]

Irritant/Hygroscopic/Light Sensitive
Hazard InformationBack Directory
[Uses]

Choline p-Toluenesulfonate Salt is a useful intermediate as well as a choline acetyltransferase (CHAT) substrate.
[Synthesis]

Synthesis_55357-38-5
A 500 mL reactor was charged at 25 ??C with 50 g (268.5 mmol) methyl tosylate and 100 mL acetone to which a solution of 25.1 g (281.6 mmol) N,N-dimethyl ethanolamine in 50.3 g acetone was added continuously at 25 ??C over 3 h. The dropping funnel was rinsed with additional acetone. The reaction mixture was stirred at 25 ??C for 20 h and the reaction progress was monitored by HPLC. When the level of methyltosylate was lower than 500 ppm the resulting suspension was cooled to 0 ??C over 150 min and the suspension was stirred at 0 ??C for 60 min. The product was collected by fdtration, washed two times with 175 mL acetone and dried under vacuum at 25 ??C to obtain 73.1 g (99 %) of choline tosylate as a white crystalline solid.
Well-known Reagent Company Product InformationBack Directory
[Alfa Aesar]

Choline tosylate, 97%(55357-38-5)
[Sigma Aldrich]

55357-38-5(sigmaaldrich)
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4640-66-8 1562-00-1 123-41-1 1914-99-4 80-48-8 104-15-4 67-48-1 1300-72-7 657-84-1 80-40-0 55357-38-5

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