681840-96-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 681840-96-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,1,8,4 and 0 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 681840-96:
(8*6)+(7*8)+(6*1)+(5*8)+(4*4)+(3*0)+(2*9)+(1*6)=190
190 % 10 = 0
So 681840-96-0 is a valid CAS Registry Number.
681840-96-0Relevant academic research and scientific papers
Synthesis of substituted dibenz[b,f]oxepines from 2,4,6-trinitrotoluene
Samet,Marshalkin,Lyssenko,Semenov
experimental part, p. 347 - 350 (2010/07/09)
1,3-Dinitro[b,f]dibenzoxepine undergoes nucleophilic substitution with O-and S-nucleophiles, the nitro group at position 1 (peri-nitro group) being selectively replaced. The factors responsible for the selectivity of the reaction are discussed.
