183433-90-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 183433-90-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,3,4,3 and 3 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 183433-90:
(8*1)+(7*8)+(6*3)+(5*4)+(4*3)+(3*3)+(2*9)+(1*0)=141
141 % 10 = 1
So 183433-90-1 is a valid CAS Registry Number.
183433-90-1Relevant academic research and scientific papers
Synthesis of (+/-) mappicine and mappicine ketone
Henegar, Kevin E.,Baughman, Ted A.
, p. 601 - 605 (2007/10/03)
Mappicine and mappicine ketone are camptothecin analogs of interest as antiviral agents. A novel synthesis of these compounds is described using a Friedlander condensation. The requisite ketone is prepared via a regioselective ortho-directed metallation/a
