55156-09-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 55156-09-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,1,5 and 6 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 55156-09:
(7*5)+(6*5)+(5*1)+(4*5)+(3*6)+(2*0)+(1*9)=117
117 % 10 = 7
So 55156-09-7 is a valid CAS Registry Number.