203338-38-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 203338-38-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,3,3 and 8 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 203338-38:
(8*2)+(7*0)+(6*3)+(5*3)+(4*3)+(3*8)+(2*3)+(1*8)=99
99 % 10 = 9
So 203338-38-9 is a valid CAS Registry Number.