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338995-95-2

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338995-95-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 338995-95-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,8,9,9 and 5 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 338995-95:
(8*3)+(7*3)+(6*8)+(5*9)+(4*9)+(3*5)+(2*9)+(1*5)=212
212 % 10 = 2
So 338995-95-2 is a valid CAS Registry Number.

338995-95-2Downstream Products

338995-95-2Relevant articles and documents

Formation of enantiomerically pure 1-Fluorovinyl and 1-fluoromethyl sulfoxides

Van Steenis, Jan Hein,Boer, Philip W. S.,Van Der Hoeven, Harald A.,Van Der Gen, Arne

, p. 911 - 918 (2007/10/03)

(Ss)-[Fluoro(p-tolylsulfinyl)methyl]diphenylphosphane oxide (2) was obtained with complete stereoselectivity from (fluoromethyl)diphenylphosphane oxide (3) and (S)-(-)-menthyl p-toluenesulfinate. 1-Fluorovinyl p-tolyl sulfoxides 1 were prepared in good yields by Horner-Wittig reaction of 2 with aldehydes, in excellent enantiomeric excess (ee). With ketones, yields were generally low. Stereoselectivity was high for aliphatic aldehydes, producing (Z) isomers, and for benzaldehydes, yielding the (E) isomers. A two-step, one-pot procedure for the conversion of 3 into 1 was also developed. Solvolysis of 2 provided the first route to enantiomerically pure (S)-1-(fluoromethyl)sulfinyl-4-methylbenzene (7).

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