3-Benzofurancarboxylic acid, 5-chloro-2,3-dihydro-, methyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.
The CAS Registry Mumber 93670-33-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,3,6,7 and 0 respectively; the second part has 2 digits, 3 and 3 respectively. Calculate Digit Verification of CAS Registry Number 93670-33: (7*9)+(6*3)+(5*6)+(4*7)+(3*0)+(2*3)+(1*3)=148 148 % 10 = 8 So 93670-33-8 is a valid CAS Registry Number.