188778-28-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188778-28-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,7,7 and 8 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 188778-28:
(8*1)+(7*8)+(6*8)+(5*7)+(4*7)+(3*8)+(2*2)+(1*8)=211
211 % 10 = 1
So 188778-28-1 is a valid CAS Registry Number.