338957-50-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 338957-50-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,8,9,5 and 7 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 338957-50:
(8*3)+(7*3)+(6*8)+(5*9)+(4*5)+(3*7)+(2*5)+(1*0)=189
189 % 10 = 9
So 338957-50-9 is a valid CAS Registry Number.