1272758-28-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1272758-28-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,2,7,5 and 8 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1272758-28:
(9*1)+(8*2)+(7*7)+(6*2)+(5*7)+(4*5)+(3*8)+(2*2)+(1*8)=177
177 % 10 = 7
So 1272758-28-7 is a valid CAS Registry Number.