2,4-dimethoxybenzenesulfonic acid methyl ester is an organic compound with the chemical formula C9H12O5S. It is a derivative of benzenesulfonic acid, featuring a benzene ring with two methoxy groups (-OCH3) at the 2nd and 4th positions, and a sulfonic acid group (-SO3H) at the para position (6th position). The methyl ester functional group (-COOCH3) is attached to the sulfonic acid group, making it a methyl ester of 2,4-dimethoxybenzenesulfonic acid. 2,4-dimethoxybenzenesulfonic acid methyl ester is known for its potential applications in the synthesis of various pharmaceuticals and agrochemicals, as well as in the production of dyes and other specialty chemicals. It is an important intermediate in organic chemistry due to its versatile structure and reactivity.
The CAS Registry Mumber 6618-77-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,6,1 and 8 respectively; the second part has 2 digits, 7 and 7 respectively. Calculate Digit Verification of CAS Registry Number 6618-77: (6*6)+(5*6)+(4*1)+(3*8)+(2*7)+(1*7)=115 115 % 10 = 5 So 6618-77-5 is a valid CAS Registry Number.