204637-81-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 204637-81-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,4,6,3 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 204637-81:
(8*2)+(7*0)+(6*4)+(5*6)+(4*3)+(3*7)+(2*8)+(1*1)=120
120 % 10 = 0
So 204637-81-0 is a valid CAS Registry Number.
204637-81-0Relevant articles and documents
Alkylation of succinates: Synthesis of Ro 32-3555
McClure, Kim F.,Axt, Matthew Z.
, p. 143 - 146 (2007/10/03)
A short synthesis, based on a succinate acylation-alkylation-decarboxylation approach, of the clinical compound Ro 32-3555 is reported. The nature of the selectivity in the mono-alkylation of succinates was examined under varying enolization conditions and in the presence of chaotropic additives.
