856340-89-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 856340-89-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,6,3,4 and 0 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 856340-89:
(8*8)+(7*5)+(6*6)+(5*3)+(4*4)+(3*0)+(2*8)+(1*9)=191
191 % 10 = 1
So 856340-89-1 is a valid CAS Registry Number.