472997-91-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 472997-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,7,2,9,9 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 472997-91:
(8*4)+(7*7)+(6*2)+(5*9)+(4*9)+(3*7)+(2*9)+(1*1)=214
214 % 10 = 4
So 472997-91-4 is a valid CAS Registry Number.