188940-30-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 188940-30-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,8,9,4 and 0 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 188940-30:
(8*1)+(7*8)+(6*8)+(5*9)+(4*4)+(3*0)+(2*3)+(1*0)=179
179 % 10 = 9
So 188940-30-9 is a valid CAS Registry Number.