70997-34-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 70997-34-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,9,9 and 7 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 70997-34:
(7*7)+(6*0)+(5*9)+(4*9)+(3*7)+(2*3)+(1*4)=161
161 % 10 = 1
So 70997-34-1 is a valid CAS Registry Number.