947921-17-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 947921-17-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,4,7,9,2 and 1 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 947921-17:
(8*9)+(7*4)+(6*7)+(5*9)+(4*2)+(3*1)+(2*1)+(1*7)=207
207 % 10 = 7
So 947921-17-7 is a valid CAS Registry Number.