665016-47-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 665016-47-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,5,0,1 and 6 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 665016-47:
(8*6)+(7*6)+(6*5)+(5*0)+(4*1)+(3*6)+(2*4)+(1*7)=157
157 % 10 = 7
So 665016-47-7 is a valid CAS Registry Number.