165750-91-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 165750-91-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,5,7,5 and 0 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 165750-91:
(8*1)+(7*6)+(6*5)+(5*7)+(4*5)+(3*0)+(2*9)+(1*1)=154
154 % 10 = 4
So 165750-91-4 is a valid CAS Registry Number.