142229-90-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 142229-90-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,2,2,2 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 142229-90:
(8*1)+(7*4)+(6*2)+(5*2)+(4*2)+(3*9)+(2*9)+(1*0)=111
111 % 10 = 1
So 142229-90-1 is a valid CAS Registry Number.
142229-90-1Relevant articles and documents
A SYNTHESIS OF 2,2,4-TRISUBSTITUTED 2H-IMIDAZOL-5-ONES FROM 3-CYANO-1,1,4-TRIARYL-2-AZA-1,3-DIENES
Dryanska, Veneta
, p. 649 - 656 (2007/10/02)
A series of 4-arylmethyl-2,2-diphenyl-2H-imidazol-5-ones (2a-r) are prepared via intramolecular cyclization from 4-aryl-3-cyano-1,1-diphenyl-2-aza-1,3-butadienes (1a-r) in aq.NaOH - ethanol system.
