140840-92-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 140840-92-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,0,8,4 and 0 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 140840-92:
(8*1)+(7*4)+(6*0)+(5*8)+(4*4)+(3*0)+(2*9)+(1*2)=112
112 % 10 = 2
So 140840-92-2 is a valid CAS Registry Number.
140840-92-2Relevant articles and documents
Palladium-catalyzed synthesis of 1,2,3,4-tetrahydro-4-oxo-β-carbolines
Chen,Yang,Wang
, p. 385 - 386 (2007/10/02)
The synthesis of 1,2,3,4-tetrahydro-4-oxo-β-carbolines from bromoenaminones derived from 1-substituted piperidine-3,5-dione is described. The reaction proceeds by the intramolecular cyclization of bromoenaminones involving arylpalladium complexes.