35778-67-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 35778-67-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,5,7,7 and 8 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 35778-67:
(7*3)+(6*5)+(5*7)+(4*7)+(3*8)+(2*6)+(1*7)=157
157 % 10 = 7
So 35778-67-7 is a valid CAS Registry Number.
35778-67-7Relevant articles and documents
N-Alkylations of Unsymmetric Piperazines
Chung, Byung-Ho,Zymalkowski, Felix
, p. 323 - 329 (2007/10/02)
Unsymmetrically 1,4-disubstituted piperazines can be N-(or N'-)mono- or N,N'-bisalkylated.If the two substituents differ in size sufficiently, monoalkylations occur regiospecifically.