182693-63-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 182693-63-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,2,6,9 and 3 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 182693-63:
(8*1)+(7*8)+(6*2)+(5*6)+(4*9)+(3*3)+(2*6)+(1*3)=166
166 % 10 = 6
So 182693-63-6 is a valid CAS Registry Number.
182693-63-6Relevant articles and documents
A novel approach to isomeric pure (±)-methadone
Bracher, Franz,Klein, Katrin,Litz, Thomas
, p. 271 - 278 (2007/10/03)
Alkylation of deprotonated diphenylacetonitrile (2) with an acetal of chloroacetone followed by acidic hydrolysis and reductive amination of the resulting ketonitrile 12 offered an easy access to the methadone precursor 3. By this pathway the formation of the undesired regioisomer 4 was avoided.
