Cas 131581-42-5,2-(2,2-Difluoro-1-methyl-vinyl)-1,4-dimethoxy-benzene

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Check Digit Verification of cas no

The CAS Registry Mumber 131581-42-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,5,8 and 1 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 131581-42:
(8*1)+(7*3)+(6*1)+(5*5)+(4*8)+(3*1)+(2*4)+(1*2)=105
105 % 10 = 5
So 131581-42-5 is a valid CAS Registry Number.

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131581-42-5Relevant articles and documents

DIFLUOROMETHYLDIPHENYLPHOSPHINE OXIDE. A NEW REAGENT FOR CONVERSION OF CARBONYL COMPOUNDS TO 1,1-DIFLUOROOLEFINS

Edwards, Michael L.,Stemerick, David M.,Jarvi, Esa T.

, p. 5571 - 5574 (1990)

Difluoromethyldiphenylphosphine oxide (5) was synthesized from chlorodifluoromethane and diphenylphosphine oxide.Reaction of 5 with a variety of ketones and aldehydes gave 1,1-difluoroolefins.Monofluoromethyldiphenylphosphine oxide (7) was also synthesize

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CAS

131581-42-5