433243-83-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 433243-83-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,3,3,2,4 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 433243-83:
(8*4)+(7*3)+(6*3)+(5*2)+(4*4)+(3*3)+(2*8)+(1*3)=125
125 % 10 = 5
So 433243-83-5 is a valid CAS Registry Number.
433243-83-5Relevant 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.
