83188-15-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 83188-15-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,1,8 and 8 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 83188-15:
(7*8)+(6*3)+(5*1)+(4*8)+(3*8)+(2*1)+(1*5)=142
142 % 10 = 2
So 83188-15-2 is a valid CAS Registry Number.
83188-15-2Relevant articles and documents
CHLOROACETYLENES AS MICHAEL ACCEPTORS. II. DIRECT ETHYNYLATION AND VINYLATION OF TERTIARY ENOLATES.
Kende, Andrew S.,Fludzinski, Pawel
, p. 2373 - 2376 (2007/10/02)
The reaction of ClCCCl, PhCCCl and PhSCCCl with a variety of tertiary enolates leads in 43-90percent yields to α-chloroethynyl, α-phenylethynyl and α-thiophenylethynyl derivatives.The -CCCl group is smoothly converted to -CCH using copper p
