159946-69-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 159946-69-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,9,9,4 and 6 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 159946-69:
(8*1)+(7*5)+(6*9)+(5*9)+(4*4)+(3*6)+(2*6)+(1*9)=197
197 % 10 = 7
So 159946-69-7 is a valid CAS Registry Number.