202867-82-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 202867-82-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,2,8,6 and 7 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 202867-82:
(8*2)+(7*0)+(6*2)+(5*8)+(4*6)+(3*7)+(2*8)+(1*2)=131
131 % 10 = 1
So 202867-82-1 is a valid CAS Registry Number.
202867-82-1Relevant academic research and scientific papers
Heterocyclic Thiones and Their Analogues in 1,3-Dipolar Cycloaddition Reactions: I. Reactions of 1,2-Dithiophthalides with Nitrilimines
Labeish,Oparin,Bel'skii,Galishev
, p. 381 - 387 (2007/10/03)
1,2-Dithiophthalides react with nitrilimines via the [3 + 2]-cycloaddition scheme to form benzo[c]thiophenespirothiadiazoles. The reactions proceed regioselectively involving the exocyclic C=S bond.
