13839-92-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 13839-92-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,8,3 and 9 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 13839-92:
(7*1)+(6*3)+(5*8)+(4*3)+(3*9)+(2*9)+(1*2)=124
124 % 10 = 4
So 13839-92-4 is a valid CAS Registry Number.
13839-92-4Relevant articles and documents
Thionation of bisindole derivatives with P4S10 or elemental sulfur
Janosik, Tomasz,Bergman, Jan,Stensland, Birgitta,Stalhandsked, Claes
, p. 330 - 334 (2007/10/03)
Thionation reactions of several bisindole derivatives using elemental sulfur or P4S10 in pyridine have been studied, leading to formation of several novel structures. The reaction of indigo or isatin with P4S10