81374-51-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 81374-51-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,3,7 and 4 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 81374-51:
(7*8)+(6*1)+(5*3)+(4*7)+(3*4)+(2*5)+(1*1)=128
128 % 10 = 8
So 81374-51-8 is a valid CAS Registry Number.
81374-51-8Relevant articles and documents
Functionalization of alkynes catalyzed by t-Bu-P4 base
Imahori, Tatsushi,Hori, Chieko,Kondo, Yoshinori
, p. 1090 - 1092 (2007/10/03)
The addition of O- and N-nucleophiles to alkynes catalyzed by a phosphazene base, t-Bu-P4 base, was investigated. Alkynes were easily transformed to enol ethers and enamines in DMSO by the addition of nucleophiles. When phenylacetylene was reacted with di