123858-53-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123858-53-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,8,5 and 8 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 123858-53:
(8*1)+(7*2)+(6*3)+(5*8)+(4*5)+(3*8)+(2*5)+(1*3)=137
137 % 10 = 7
So 123858-53-7 is a valid CAS Registry Number.
123858-53-7Relevant articles and documents
Polycyclic Aromatic Alkaloids, V. - Synthesis of 2-Bromoleptoclinidinone
Bracher, Franz
, p. 205 - 206 (2007/10/02)
4-Bromo-2-nitroacetophenone (6) is selectively reduced to the amine 7 by Fe in aqueous acetic acid.Oxidative amination of quinolinequinone 8 with 7 gives 9.Acid-catalysed cyclization of 9, followed by anellation of a pyridine ring, gives the cytotoxic pentacyclic alkaloid 2-bromoleptoclinidinone (3).
