119930-19-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 119930-19-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,9,9,3 and 0 respectively; the second part has 2 digits, 1 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 119930-19:
(8*1)+(7*1)+(6*9)+(5*9)+(4*3)+(3*0)+(2*1)+(1*9)=137
137 % 10 = 7
So 119930-19-7 is a valid CAS Registry Number.
119930-19-7Relevant articles and documents
MECHANISTIC ASPECTS OF THE REACTION OF SOME PHOSPHONIUM YLIDES WITH ALKYL PROPYNOATES
Barluenga, Jose,Lopez, Fernando,Palacios, Francisco,Sanchez-Ferrando, Francisco
, p. 381 - 384 (2007/10/02)
The reaction of alkoxycarbonylmethylentriphenylphosphonium ylides 7 with alkyl propynoates 6 in dichloromethane proceeds via cycloaddition rather than Michael addition, to lead to stabilised phosphonium ylides.
