Indoxyl Acetate

Updated: 2026-08-02

Overview

Indoxyl acetate is an organic compound derived from indole, commonly used in biochemical and enzymatic research. It serves as a substrate for detecting esterase activity due to its ability to hydrolyze into indoxyl and acetate. This reaction is often utilized in diagnostic assays and research applications to study enzyme kinetics and activity. Indoxyl acetate is valued for its specificity and sensitivity in detecting esterases, making it a critical component in various laboratory protocols. Its stability and relatively simple synthesis also contribute to its widespread use in both academic and industrial settings.

Physical and Chemical Properties

Indoxyl acetate is a white to off-white crystalline powder with a molecular weight of 175.18 g/mol. It has a melting point of approximately 85-87°C and is soluble in organic solvents such as ethanol and DMSO, though it is only slightly soluble in water. The compound is stable under recommended storage conditions but may degrade if exposed to moisture or light over extended periods. Its key chemical property is its role as a substrate for esterases. Upon hydrolysis, it releases indoxyl, which can further oxidize to form indigo, a blue-colored compound. This reaction is often exploited in colorimetric assays to measure enzyme activity.

Main Applications

Indoxyl acetate is primarily used in biochemical assays to detect and quantify esterase activity. It is a common component in diagnostic kits for clinical and research laboratories, where it helps identify enzymatic activity in samples. The compound's hydrolysis reaction is also employed in histochemistry to localize esterase activity in tissues. Beyond diagnostics, indoxyl acetate is utilized in research settings to study enzyme inhibition, kinetics, and mechanism. Its specificity for certain esterases makes it a valuable tool for understanding metabolic pathways and developing therapeutic agents targeting these enzymes.

Safety and Storage

Indoxyl acetate should be handled with care, using appropriate personal protective equipment such as gloves and eye protection. Avoid inhalation or ingestion, as it may cause irritation or other adverse effects. The compound is stable when stored in a cool, dry place away from light and moisture, but prolonged exposure to unfavorable conditions may degrade its quality. For long-term storage, it is recommended to keep the compound in a tightly sealed container under inert gas, if possible. Always refer to the safety data sheet (SDS) provided by the manufacturer for specific handling and disposal guidelines.

B2B Procurement Guide

When procuring indoxyl acetate for industrial or research purposes, buyers should prioritize purity (typically ≥98%) and verify the CAS number (608-08-2) to ensure product authenticity. Request a certificate of analysis (COA) from suppliers to confirm specifications such as molecular weight, melting point, and solubility. Prices vary depending on purity and supplier, with a reference range of approximately $50-$200 per gram. Bulk purchases may qualify for discounts. Reliable suppliers often provide technical support and documentation, which can be critical for compliance and application-specific requirements.