19020-20-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19020-20-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,0,2 and 0 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 19020-20:
(7*1)+(6*9)+(5*0)+(4*2)+(3*0)+(2*2)+(1*0)=73
73 % 10 = 3
So 19020-20-3 is a valid CAS Registry Number.
19020-20-3Relevant articles and documents
Reversed Chemoselectivity in Titanium-induced Coupling Reactions: Syntheses of Salvadoricine and Diazepam
Fuerstner, Alois,Jumbam, Denis N.
, p. 211 - 212 (2007/10/02)
Titanium/graphite-promoted indole formation is favoured over inter- as well as intra-molecular McMurry coupling as evidenced by chemoselective syntheses of compounds 2 and 5-7.
