155553-40-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 155553-40-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,5,5 and 3 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 155553-40:
(8*1)+(7*5)+(6*5)+(5*5)+(4*5)+(3*3)+(2*4)+(1*0)=135
135 % 10 = 5
So 155553-40-5 is a valid CAS Registry Number.