23731-47-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23731-47-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,7,3 and 1 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 23731-47:
(7*2)+(6*3)+(5*7)+(4*3)+(3*1)+(2*4)+(1*7)=97
97 % 10 = 7
So 23731-47-7 is a valid CAS Registry Number.