21878-95-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21878-95-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,8,7 and 8 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 21878-95:
(7*2)+(6*1)+(5*8)+(4*7)+(3*8)+(2*9)+(1*5)=135
135 % 10 = 5
So 21878-95-5 is a valid CAS Registry Number.