444109-47-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 444109-47-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,4,4,1,0 and 9 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 444109-47:
(8*4)+(7*4)+(6*4)+(5*1)+(4*0)+(3*9)+(2*4)+(1*7)=131
131 % 10 = 1
So 444109-47-1 is a valid CAS Registry Number.
444109-47-1Relevant articles and documents
Synthesis of thio- and oxo-analogues of isopsoralen
Clarke, Dino J,Robinson, Ross S
, p. 2831 - 2837 (2002)
A range of novel 5′-substituted 7-oxo and 7-thioisopsoralens were synthesized via a Claisen rearranged allyl aryl ether followed by reductive ozonolysis in the presence of a suitable solvent. In some cases dimethylthiocarbamoyl chloride was used as a protecting group and to introduce the thiol moiety.
