In the realm of fine chemicals, certain compounds stand out for their versatility and critical role in industrial synthesis. Ethyl 5-oxo-1-phenyl-2-pyrazoline-3-carboxylate (CAS 89-33-8) is one such compound, prized for its unique chemical structure and widespread utility, particularly as an intermediate in the production of pigments and dyes. Understanding its properties and applications is key for R&D scientists, formulators, and procurement specialists seeking to leverage its potential.

Chemical Profile and Key Properties

Ethyl 5-oxo-1-phenyl-2-pyrazoline-3-carboxylate, also known by synonyms such as 1-Phenyl-3-carbethoxy-5-pyrazolone or PCEP, possesses a molecular formula of C12H12N2O3 and a molecular weight of 232.24 g/mol. Its CAS number, 89-33-8, uniquely identifies it within chemical databases. Typically presented as a light brown powder, its purity, often reaching 99%, is a critical specification for its intended applications. This compound's structure features a pyrazolone ring system substituted with a phenyl group and an ethoxycarbonyl group, which are instrumental in its reactivity and function as a chromophore precursor. The EINECS number 201-899-4 further aids in its identification. When you are looking to buy this chemical, understanding these fundamental properties ensures you are acquiring the correct material for your synthesis.

Primary Role as a Pigment and Dye Intermediate

The most significant application of Ethyl 5-oxo-1-phenyl-2-pyrazoline-3-carboxylate lies in its function as a vital intermediate for dyes and pigments. Its molecular architecture allows it to be coupled with diazonium salts to form azo dyes and pigments, a class renowned for its wide range of vibrant colors and good fastness properties. For instance, it serves as a precursor for certain yellow, orange, and red pigments. Manufacturers rely on this compound to create colorants used across various industries, including textiles, paints, inks, and plastics. The consistent supply from reliable manufacturers in China ensures that these industries can continue to produce high-quality colored products.

Beyond Colorants: Other Applications and Potential

While its role in color chemistry is dominant, the reactivity of Ethyl 5-oxo-1-phenyl-2-pyrazoline-3-carboxylate also lends itself to other areas of organic synthesis. It can be employed in the development of pharmaceutical intermediates, agrochemicals, and other specialty chemicals where the pyrazolone core structure is desired. Researchers are continuously exploring new synthetic routes and applications for this versatile molecule. For those in research and development, sourcing this intermediate from reputable suppliers ensures the integrity of experimental results, especially when exploring novel chemical pathways. Its availability from chemical suppliers worldwide, particularly those in China specializing in fine chemicals, makes it an accessible component for innovative projects.

In summary, Ethyl 5-oxo-1-phenyl-2-pyrazoline-3-carboxylate is a compound of considerable industrial importance. Its well-defined chemical properties, coupled with its crucial role as a precursor for colorants and other fine chemicals, make it an indispensable material. Procurement professionals and chemists alike can benefit from understanding its attributes when sourcing this compound for their manufacturing and research needs.