72481-17-5 Usage
Preparation
Obtained by treatment of 3-nitro-4-hydroxycoumarin—m.p. 177° (d)—with refluxing in a mixture of 58% hydriodic acid solution and acetic acid for 15 min. The iodine produced during the reaction was reduced with hypophosphorous acid.
Check Digit Verification of cas no
The CAS Registry Mumber 72481-17-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,4,8 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 72481-17:
(7*7)+(6*2)+(5*4)+(4*8)+(3*1)+(2*1)+(1*7)=125
125 % 10 = 5
So 72481-17-5 is a valid CAS Registry Number.