193900-45-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 193900-45-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,3,9,0 and 0 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 193900-45:
(8*1)+(7*9)+(6*3)+(5*9)+(4*0)+(3*0)+(2*4)+(1*5)=147
147 % 10 = 7
So 193900-45-7 is a valid CAS Registry Number.