851721-92-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 851721-92-1 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 1 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 851721-92:
(8*8)+(7*5)+(6*1)+(5*7)+(4*2)+(3*1)+(2*9)+(1*2)=171
171 % 10 = 1
So 851721-92-1 is a valid CAS Registry Number.