189942-50-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 189942-50-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,9,9,4 and 2 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 189942-50:
(8*1)+(7*8)+(6*9)+(5*9)+(4*4)+(3*2)+(2*5)+(1*0)=195
195 % 10 = 5
So 189942-50-5 is a valid CAS Registry Number.