188787-71-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188787-71-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,7,8 and 7 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 188787-71:
(8*1)+(7*8)+(6*8)+(5*7)+(4*8)+(3*7)+(2*7)+(1*1)=215
215 % 10 = 5
So 188787-71-5 is a valid CAS Registry Number.