For procurement managers and R&D scientists in the chemical and pharmaceutical industries, understanding the precise specifications of a chemical intermediate is fundamental to successful sourcing. Ethyl Oxophenylacetate, identified by its CAS number 1603-79-8, is a compound that requires careful consideration of its quality parameters to ensure its efficacy in downstream applications. This article outlines the key specifications that buyers should look for when they aim to purchase Ethyl Oxophenylacetate and highlights the importance of reliable supplier information.

Ethyl Oxophenylacetate, also known as ethyl benzoylformate or ethyl phenylglyoxylate, is primarily valued for its role as a synthetic building block. The performance of this intermediate in complex organic synthesis and pharmaceutical production hinges on several critical specifications:

1. Purity:

This is arguably the most important specification. For most demanding applications, including pharmaceutical intermediate synthesis, a high purity level is essential. Manufacturers typically offer Ethyl Oxophenylacetate with a minimum purity of 97%, often determined by Gas Chromatography (GC) or High-Performance Liquid Chromatography (HPLC). For specialized or very sensitive reactions, even higher purities might be specified.

2. Molecular Formula and Weight:

Knowing the correct molecular formula and weight is crucial for stoichiometric calculations and understanding reaction stoichiometry. For Ethyl Oxophenylacetate, these are:

  • Molecular Formula: C10H10O3
  • Molecular Weight: Approximately 178.185 g/mol

These values are standard and should be consistent across all reputable suppliers.

3. Appearance:

The physical state and appearance can offer initial clues about the product's general condition. Ethyl Oxophenylacetate is typically described as a liquid at room temperature.

4. CAS Number:

The Chemical Abstracts Service (CAS) number is a unique numerical identifier for chemical substances. For Ethyl Oxophenylacetate, the definitive CAS number is 1603-79-8. Always verify this number when sourcing to ensure you are referencing the correct compound.

5. Boiling Point (BP) and Melting Point (MP):

While less critical for a liquid intermediate unless specific distillation or crystallization steps are involved in its use, these physical properties provide further characterization data. For Ethyl Oxophenylacetate, the boiling point is around 256.5 °C at 760 mmHg, and the melting point is stated as 97°C in some sources, though it's primarily handled as a liquid.

6. Density:

Density is another physical property that helps in material identification and handling. For Ethyl Oxophenylacetate, it is typically around 1.1 g/cm³.

Sourcing and Quotation:

When procurement professionals seek to buy Ethyl Oxophenylacetate, engaging with manufacturers who clearly provide these specifications is vital. For instance, suppliers like NINGBO INNO PHARMCHEM CO.,LTD. typically provide detailed product sheets that include these critical parameters. Requesting a quote should always be accompanied by a request for the Certificate of Analysis (CoA) for the specific batch you intend to purchase. This ensures transparency and verifies that the product meets your required standards for purity and quality. Reliable suppliers will also be able to provide information on packaging options and delivery timelines, further aiding the procurement process.