128338-86-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 128338-86-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,3,3 and 8 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 128338-86:
(8*1)+(7*2)+(6*8)+(5*3)+(4*3)+(3*8)+(2*8)+(1*6)=143
143 % 10 = 3
So 128338-86-3 is a valid CAS Registry Number.