271577-90-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 271577-90-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,7,1,5,7 and 7 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 271577-90:
(8*2)+(7*7)+(6*1)+(5*5)+(4*7)+(3*7)+(2*9)+(1*0)=163
163 % 10 = 3
So 271577-90-3 is a valid CAS Registry Number.