842-27-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 842-27-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,4 and 2 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 842-27:
(5*8)+(4*4)+(3*2)+(2*2)+(1*7)=73
73 % 10 = 3
So 842-27-3 is a valid CAS Registry Number.
842-27-3Relevant articles and documents
Synthesis of Annulated Carbazoles from Indol-2,3-dione
Beccalli, Egle M.,Marchesini, Alessandro,Pilati, Tullio
, p. 4741 - 4758 (2007/10/02)
Reaction of ethyl chloroformate with 3-aroylmethylindol-2(3H)-ones 5 affords the ethyl 3--2-(ethoxycarbonyloxy)indole-1-carboxylates 6 from which the corresponding annulated carbazoles 10 are obtained via 6?-electro