688357-23-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 688357-23-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,8,3,5 and 7 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 688357-23:
(8*6)+(7*8)+(6*8)+(5*3)+(4*5)+(3*7)+(2*2)+(1*3)=215
215 % 10 = 5
So 688357-23-5 is a valid CAS Registry Number.