205990-41-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 205990-41-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,9,9 and 0 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 205990-41:
(8*2)+(7*0)+(6*5)+(5*9)+(4*9)+(3*0)+(2*4)+(1*1)=136
136 % 10 = 6
So 205990-41-6 is a valid CAS Registry Number.