859334-21-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 859334-21-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,9,3,3 and 4 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 859334-21:
(8*8)+(7*5)+(6*9)+(5*3)+(4*3)+(3*4)+(2*2)+(1*1)=197
197 % 10 = 7
So 859334-21-7 is a valid CAS Registry Number.