1307557-72-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1307557-72-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,7,5,5 and 7 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1307557-72:
(9*1)+(8*3)+(7*0)+(6*7)+(5*5)+(4*5)+(3*7)+(2*7)+(1*2)=157
157 % 10 = 7
So 1307557-72-7 is a valid CAS Registry Number.