307550-58-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 307550-58-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,7,5,5 and 0 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 307550-58:
(8*3)+(7*0)+(6*7)+(5*5)+(4*5)+(3*0)+(2*5)+(1*8)=129
129 % 10 = 9
So 307550-58-9 is a valid CAS Registry Number.
307550-58-9Relevant academic research and scientific papers
Modified coumarins. 3. Psoralen and allopsoralen analogs
Garazd,Garazd,Shilin,Khilya
, p. 409 - 420 (2007/10/03)
1,2,3,4-Tetrahydro-5H-benzo[c]furo[3,2-g]chromen-5-ones and 8,9,10,11-tetrahydro-7H-benzo[c]furo[2,3-f]chromen-7-ones, analogs of psoralen and allopsoralen, were synthesized from 1-hydroxy- and 3-hydroxy-7,8,9,10-tetrahydro-6H-benzo[c]chromen-6-ones.
