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157609-88-6

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157609-88-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157609-88-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,6,0 and 9 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 157609-88:
(8*1)+(7*5)+(6*7)+(5*6)+(4*0)+(3*9)+(2*8)+(1*8)=166
166 % 10 = 6
So 157609-88-6 is a valid CAS Registry Number.

157609-88-6Relevant articles and documents

N,S-DIMETHYL-S-PHENYLSULFOXIMINE. A REAGENT FOR THE OPTICAL RESOLUTION OF KETONES

Johnson, Carl R.,Zeller, James R.

, p. 1225 - 1234 (2007/10/02)

The addition of the α-lithio derivative of (+)- or (-)-N,S-dimethyl-S-phenylsulfoximine to selected dl-ketones was carried out at -78 deg C in tetrahydrofuran followed by acid quench at that temperature to produce mixtures of diastereomeric β-hydroxysulfoximines.The optically-active diastereomers were chromatographically separated on silica gel.The purified diastereomers were thermolyzed at ca. 130 deg to produce optically-active ketones and the optically-active sulfoximine which could be recycled.

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