1257239-30-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1257239-30-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,2,3 and 9 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1257239-30:
(9*1)+(8*2)+(7*5)+(6*7)+(5*2)+(4*3)+(3*9)+(2*3)+(1*0)=157
157 % 10 = 7
So 1257239-30-7 is a valid CAS Registry Number.