856997-52-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 856997-52-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,5,6,9,9 and 7 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 856997-52:
(8*8)+(7*5)+(6*6)+(5*9)+(4*9)+(3*7)+(2*5)+(1*2)=249
249 % 10 = 9
So 856997-52-9 is a valid CAS Registry Number.