1017778-84-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1017778-84-5 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,0,1,7,7,7 and 8 respectively; the second part has 2 digits, 8 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1017778-84:
(9*1)+(8*0)+(7*1)+(6*7)+(5*7)+(4*7)+(3*8)+(2*8)+(1*4)=165
165 % 10 = 5
So 1017778-84-5 is a valid CAS Registry Number.