70172-77-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 70172-77-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,1,7 and 2 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 70172-77:
(7*7)+(6*0)+(5*1)+(4*7)+(3*2)+(2*7)+(1*7)=109
109 % 10 = 9
So 70172-77-9 is a valid CAS Registry Number.