26212-81-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 26212-81-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,6,2,1 and 2 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 26212-81:
(7*2)+(6*6)+(5*2)+(4*1)+(3*2)+(2*8)+(1*1)=87
87 % 10 = 7
So 26212-81-7 is a valid CAS Registry Number.
26212-81-7Relevant 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.