847665-21-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 847665-21-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,4,7,6,6 and 5 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 847665-21:
(8*8)+(7*4)+(6*7)+(5*6)+(4*6)+(3*5)+(2*2)+(1*1)=208
208 % 10 = 8
So 847665-21-8 is a valid CAS Registry Number.