72971-83-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72971-83-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,9,7 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 72971-83:
(7*7)+(6*2)+(5*9)+(4*7)+(3*1)+(2*8)+(1*3)=156
156 % 10 = 6
So 72971-83-6 is a valid CAS Registry Number.