218785-68-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 218785-68-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,7,8 and 5 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 218785-68:
(8*2)+(7*1)+(6*8)+(5*7)+(4*8)+(3*5)+(2*6)+(1*8)=173
173 % 10 = 3
So 218785-68-3 is a valid CAS Registry Number.
218785-68-3Relevant articles and documents
Efficient synthesis of substituted oxopiperazines from amino acids
Mohamed, Nazim,Bhatt, Ulhas,Just, George
, p. 8213 - 8216 (2007/10/03)
The synthesis of substituted oxopiperazines, which may act as conformationally constrained peptide mimics, is reported. The synthesis is based on the cyclization of sulfonamide dipeptides with dibromoethane as the 1,2-dielectrophile. Alternatively, these
