1237493-20-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1237493-20-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,7,4,9 and 3 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1237493-20:
(9*1)+(8*2)+(7*3)+(6*7)+(5*4)+(4*9)+(3*3)+(2*2)+(1*0)=157
157 % 10 = 7
So 1237493-20-7 is a valid CAS Registry Number.