500203-97-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 500203-97-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,0,0,2,0 and 3 respectively; the second part has 2 digits, 9 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 500203-97:
(8*5)+(7*0)+(6*0)+(5*2)+(4*0)+(3*3)+(2*9)+(1*7)=84
84 % 10 = 4
So 500203-97-4 is a valid CAS Registry Number.
500203-97-4Relevant academic research and scientific papers
Modified coumarins. 6. Synthesis of substituted 5,6-benzopsoralens
Garazd,Ogorodniichuk,Garazd,Khilya
, p. 424 - 433 (2007/10/03)
Substituted 5H-benzo[c]furo[3,2-g]chromen-5-ones, modified analogs of psoralen that contain a benzene ring annelated at the 5,6-position of a furo[3,2-g]chromen-7-one system, were synthesized from 3-hydroxy-6H-benzo[c] chromen-6-ones.
