71720-46-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 71720-46-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,1,7,2 and 0 respectively; the second part has 2 digits, 4 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 71720-46:
(7*7)+(6*1)+(5*7)+(4*2)+(3*0)+(2*4)+(1*6)=112
112 % 10 = 2
So 71720-46-2 is a valid CAS Registry Number.
InChI:InChI=1/C24H18N2O2/c1-17-10-12-19(13-11-17)24-16-21(20-8-5-9-22(14-20)26(27)28)15-23(25-24)18-6-3-2-4-7-18/h2-16H,1H3