155707-42-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 155707-42-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,5,7,0 and 7 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 155707-42:
(8*1)+(7*5)+(6*5)+(5*7)+(4*0)+(3*7)+(2*4)+(1*2)=139
139 % 10 = 9
So 155707-42-9 is a valid CAS Registry Number.