851720-29-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 851720-29-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,1,7,2 and 0 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 851720-29:
(8*8)+(7*5)+(6*1)+(5*7)+(4*2)+(3*0)+(2*2)+(1*9)=161
161 % 10 = 1
So 851720-29-1 is a valid CAS Registry Number.