205651-05-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 205651-05-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,6,5 and 1 respectively; the second part has 2 digits, 0 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 205651-05:
(8*2)+(7*0)+(6*5)+(5*6)+(4*5)+(3*1)+(2*0)+(1*5)=104
104 % 10 = 4
So 205651-05-4 is a valid CAS Registry Number.