138142-34-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 138142-34-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,1,4 and 2 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 138142-34:
(8*1)+(7*3)+(6*8)+(5*1)+(4*4)+(3*2)+(2*3)+(1*4)=114
114 % 10 = 4
So 138142-34-4 is a valid CAS Registry Number.
138142-34-4Relevant articles and documents
SYNTHESIS AND PROPERTIES OF α-SILYLATED 2-PYRROLIDONE DERIVATIVES
Kramarova, E. P.,Anisomova, N. A.,Baukov, Yu. I.
, p. 1284 - 1290 (2007/10/02)
A method has been described for the synthesis of previously unreported α-silylated N-substituted 2-pyrrolidone derivatives and a study was carried out on the reactions of these compounds with lithium aluminium hydride and electrophilic reagents.