444996-48-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 444996-48-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,4,9,9 and 6 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 444996-48:
(8*4)+(7*4)+(6*4)+(5*9)+(4*9)+(3*6)+(2*4)+(1*8)=199
199 % 10 = 9
So 444996-48-9 is a valid CAS Registry Number.
444996-48-9Relevant articles and documents
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.
