858458-21-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 858458-21-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,8,4,5 and 8 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 858458-21:
(8*8)+(7*5)+(6*8)+(5*4)+(4*5)+(3*8)+(2*2)+(1*1)=216
216 % 10 = 6
So 858458-21-6 is a valid CAS Registry Number.