21878-48-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21878-48-8 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, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21878-48:
(7*2)+(6*1)+(5*8)+(4*7)+(3*8)+(2*4)+(1*8)=128
128 % 10 = 8
So 21878-48-8 is a valid CAS Registry Number.