203661-86-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 203661-86-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,6,6 and 1 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 203661-86:
(8*2)+(7*0)+(6*3)+(5*6)+(4*6)+(3*1)+(2*8)+(1*6)=113
113 % 10 = 3
So 203661-86-3 is a valid CAS Registry Number.