102170-77-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 102170-77-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,2,1,7 and 0 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 102170-77:
(8*1)+(7*0)+(6*2)+(5*1)+(4*7)+(3*0)+(2*7)+(1*7)=74
74 % 10 = 4
So 102170-77-4 is a valid CAS Registry Number.