162663-25-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 162663-25-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,2,6,6 and 3 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 162663-25:
(8*1)+(7*6)+(6*2)+(5*6)+(4*6)+(3*3)+(2*2)+(1*5)=134
134 % 10 = 4
So 162663-25-4 is a valid CAS Registry Number.
162663-25-4Relevant articles and documents
A general and convenient synthesis of N-[(1-diphenyl-oxophosphinyl)alkyl]carboxamides and sulfamide
Katritzky,Wu,Xie
, p. 1187 - 1196 (1995)
A wide range of title compounds were prepared in good yields by amidoalkylation of ethyl diphenylphosphinite with readily available N-[α-(benzotriazol-1-yl)alkyl]amides. A more convenient direct one-pot amidoalkylation of ethyl diphenylphosphinite with an