Methanesulfonic acid, trifluoro-, 1-iodo-2-naphthalenyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 138720-00-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,8,7,2 and 0 respectively; the second part has 2 digits, 0 and 0 respectively. Calculate Digit Verification of CAS Registry Number 138720-00: (8*1)+(7*3)+(6*8)+(5*7)+(4*2)+(3*0)+(2*0)+(1*0)=120 120 % 10 = 0 So 138720-00-0 is a valid CAS Registry Number.