871886-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 871886-21-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,1,8,8 and 6 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 871886-21:
(8*8)+(7*7)+(6*1)+(5*8)+(4*8)+(3*6)+(2*2)+(1*1)=214
214 % 10 = 4
So 871886-21-4 is a valid CAS Registry Number.