131920-07-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 131920-07-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,1,9,2 and 0 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 131920-07:
(8*1)+(7*3)+(6*1)+(5*9)+(4*2)+(3*0)+(2*0)+(1*7)=95
95 % 10 = 5
So 131920-07-5 is a valid CAS Registry Number.
InChI:InChI=1/C16H16N2O2/c1-11(19)7-16(10-17,12(2)20)8-13-9-18-15-6-4-3-5-14(13)15/h3-6,9,18H,7-8H2,1-2H3
131920-07-5Relevant articles and documents
THE CHEMISTRY OF THE PYRIDOCARBAZOLES PART 15. THE SYNTHESIS OF UNSYMMETRICALLY 1,4-DISUBSTITUTED CARBAZOLES AND THEIR USE IN THE SYNTHESIS OF 6H-PYRIDOCARBAZOLES
Hogan, Iain,Jenkins, Paul D.,Sainsbury, Malcolm
, p. 2943 - 2964 (2007/10/02)
A new construction of unsymmetrically 1,4-disubstituted carbazoles has been devised and used in the synthesis of the alkaloid olivacine.The starting materials are gramines and the sodium salts of 2-cyano-4-oxopentanonitriles.These afford 4-cyano-5-(indol-