397-47-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 397-47-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 3,9 and 7 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 397-47:
(5*3)+(4*9)+(3*7)+(2*4)+(1*7)=87
87 % 10 = 7
So 397-47-7 is a valid CAS Registry Number.