170511-21-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 170511-21-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,5,1 and 1 respectively; the second part has 2 digits, 2 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 170511-21:
(8*1)+(7*7)+(6*0)+(5*5)+(4*1)+(3*1)+(2*2)+(1*1)=94
94 % 10 = 4
So 170511-21-4 is a valid CAS Registry Number.