Chemical Identity and Structure

Methyl 2-(5-chloro-1H-indol-3-yl)acetate belongs to the indole family of heterocyclic compounds. Its molecular architecture features a bicyclic indole core in which the nitrogen-bearing pyrrole ring is fused to a benzene ring. A chlorine atom is positioned at the 5-position of the benzene ring, and a methyl acetate (–CH₂COOCH₃) group is appended at the 3-position of the pyrrole ring — the same position found in the naturally occurring plant hormone indole-3-acetic acid (IAA).

The 5-chloro substitution introduces an electron-withdrawing effect on the aromatic system, modulating the compound's electronic density and reactivity. The methyl ester moiety provides a readily transformable handle for further derivatization: it can be hydrolyzed to the free carboxylic acid, reduced to the alcohol, converted to amides, or engaged in Claisen-type condensations, making this compound a highly flexible synthetic intermediate.

The indole N–H is available for alkylation or acylation, affording additional points of diversification. Together, these features make Methyl 2-(5-chloro-1H-indol-3-yl)acetate a multi-functional building block in complex molecule synthesis.

Physicochemical Properties and Handling

As a solid organic compound containing an indole core and a halogen substituent, Methyl 2-(5-chloro-1H-indol-3-yl)acetate exhibits moderate lipophilicity consistent with its ester and chloroaromatic functionalities. These properties make it soluble in common organic solvents such as dichloromethane, ethyl acetate, tetrahydrofuran, dimethyl sulfoxide (DMSO), and acetonitrile, while having limited solubility in water.

The compound should be stored in a cool, dry, and well-ventilated location, protected from light and moisture. Indole-containing compounds are generally sensitive to prolonged exposure to light and air; storage under inert atmosphere (nitrogen or argon) is recommended for long-term preservation of the neat material. Users should consult the Safety Data Sheet (SDS) prior to use and employ standard personal protective equipment including gloves, eye protection, and lab coat. Waste disposal must comply with applicable local regulations for halogenated organic compounds.

Purity and exact physicochemical parameters (melting point, molecular weight, exact CAS number) should be verified on the current Aladdin Scientific product specification sheet for SKU M735045, as analytical data may be updated with each lot.

Synthetic Applications and Research Uses

The indole scaffold is one of the most prevalent heterocyclic motifs in biologically active natural products and approved pharmaceuticals. The 3-position of indole is particularly important as a site for carbon-chain elaboration, and Methyl 2-(5-chloro-1H-indol-3-yl)acetate presents this chain in a conveniently activated ester form.

In medicinal chemistry, this compound can serve as a precursor for the synthesis of indole-containing drug candidates targeting a wide range of biological pathways. The 5-chloro group is a common pharmacophoric element that can enhance binding affinity, membrane permeability, and metabolic stability relative to unsubstituted analogs. Halogenated indole acetic acid esters have been explored as intermediates toward kinase inhibitors, receptor modulators, and anti-infective agents, among other therapeutic classes.

In agrochemical research, the compound's structural resemblance to indole-3-acetic acid (IAA) — the primary natural auxin in plants — suggests potential utility in the design of synthetic plant growth regulators or in mechanistic studies of auxin signaling. Researchers investigating auxin analogs may use this ester as a starting material to introduce further structural variation.

Beyond target-oriented synthesis, the compound can be employed in methodology development: as a substrate to evaluate new C–H functionalization strategies, palladium-catalyzed cross-coupling reactions at the aryl chloride, or enzymatic resolution protocols targeting the chiral center that may arise in downstream products.

Ordering, Specifications, and Quality Assurance

Methyl 2-(5-chloro-1H-indol-3-yl)acetate is available from Aladdin Scientific under SKU M735045. Researchers are encouraged to review the current product page for up-to-date information on available pack sizes, purity grade, lot-specific certificates of analysis (CoA), and pricing.

Aladdin Scientific provides certificates of analysis with each lot, detailing purity (typically assessed by HPLC or GC), appearance, and other relevant quality parameters. Researchers requiring custom quantities, bulk pricing, or specific purity grades should contact Aladdin Scientific's technical sales team directly.

For procurement teams, this compound falls under the category of heterocyclic building blocks and fine chemicals. When placing orders, please reference SKU M735045 to ensure accurate fulfillment. Information on shipping conditions, storage requirements on arrival, and applicable regulatory documentation (e.g., SDS) is available through the Aladdin Scientific website or customer service channels.