871902-51-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 871902-51-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,1,9,0 and 2 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 871902-51:
(8*8)+(7*7)+(6*1)+(5*9)+(4*0)+(3*2)+(2*5)+(1*1)=181
181 % 10 = 1
So 871902-51-1 is a valid CAS Registry Number.