208986-13-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 208986-13-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,8,9,8 and 6 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 208986-13:
(8*2)+(7*0)+(6*8)+(5*9)+(4*8)+(3*6)+(2*1)+(1*3)=164
164 % 10 = 4
So 208986-13-4 is a valid CAS Registry Number.
208986-13-4Relevant articles and documents
Preparation of 3-Ethyloxindole-4,7-quinone
Mehta, Lina K.,Parrick, John,Payne, Fereshteh
, p. 190 - 191 (1998)
The preparation of 3-ethyloxindole-4,7-quinone 10 from 4,7-dimethoxyisatin 1 in four steps is described.
