403704-44-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 403704-44-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,0,3,7,0 and 4 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 403704-44:
(8*4)+(7*0)+(6*3)+(5*7)+(4*0)+(3*4)+(2*4)+(1*4)=109
109 % 10 = 9
So 403704-44-9 is a valid CAS Registry Number.
403704-44-9Relevant academic research and scientific papers
The first total synthesis of (corrected) ritterazine M
Lee, Seongmin,Fuchs, Philip L.
, p. 317 - 318 (2007/10/03)
(Equation Presented) Hecogenin acetate was converted to ritterazine M in 16 operations with an average yield per opearation of 87%. The overall linear yield was 12%. This confirmed 1 as the corrected structure for ritterazine M by total synthesis.
