136878-55-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136878-55-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,6,8,7 and 8 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 136878-55:
(8*1)+(7*3)+(6*6)+(5*8)+(4*7)+(3*8)+(2*5)+(1*5)=172
172 % 10 = 2
So 136878-55-2 is a valid CAS Registry Number.
136878-55-2Relevant articles and documents
Intramolecular Diels-Alder reactions of 4H-furo[3,4-b]indoles. New syntheses of benzo[a]carbazoles and benzo[c]carbazoles
Gribble, Gordon W.,Silva, Richard A.,Saulnier, Mark G.
, p. 729 - 747 (1999)
Furoindoles 7 and 16 undergo smooth intramolecular Diels-Alder reactions to afford, after dehydration, hydrolysis, and oxidation, benzocarbazoles 11 and 21, respectively.