206556-67-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 206556-67-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,6,5,5 and 6 respectively; the second part has 2 digits, 6 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 206556-67:
(8*2)+(7*0)+(6*6)+(5*5)+(4*5)+(3*6)+(2*6)+(1*7)=134
134 % 10 = 4
So 206556-67-4 is a valid CAS Registry Number.