97854-90-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 97854-90-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,7,8,5 and 4 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 97854-90:
(7*9)+(6*7)+(5*8)+(4*5)+(3*4)+(2*9)+(1*0)=195
195 % 10 = 5
So 97854-90-5 is a valid CAS Registry Number.