Terephthalic acid-chloride isobutyl ester, also known as isobutyl chloroacetate, is an organic compound with the chemical formula C6H9ClO2. It is a colorless liquid that is soluble in water and has a pungent odor. This ester is formed by the reaction of isobutanol with chloroacetic acid, and it is used as an intermediate in the synthesis of various pharmaceuticals, agrochemicals, and other specialty chemicals. It is also employed as a solvent and a reagent in chemical reactions. Due to its reactivity, it is essential to handle it with care, as it can be harmful if inhaled, ingested, or absorbed through the skin.
The CAS Registry Mumber 4542-99-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,5,4 and 2 respectively; the second part has 2 digits, 9 and 9 respectively. Calculate Digit Verification of CAS Registry Number 4542-99: (6*4)+(5*5)+(4*4)+(3*2)+(2*9)+(1*9)=98 98 % 10 = 8 So 4542-99-8 is a valid CAS Registry Number.