For professionals in the chemical industry, a thorough understanding of key chemical intermediates is fundamental to successful research, development, and manufacturing. Methyl 4-Isocyanatobenzoate (CAS: 23138-53-6) is one such compound that warrants detailed attention. This article will explore its essential properties, the critical importance of purity, and the factors that influence its price when considering a purchase.

Methyl 4-Isocyanatobenzoate is an organic compound with the molecular formula C9H7NO3 and a molecular weight of 177.16 g/mol. Its structure features a benzene ring substituted with a methyl ester group (-COOCH3) and an isocyanate group (-N=C=O). This bifunctional nature grants it significant reactivity, making it a valuable building block in various chemical syntheses. Physical characteristics often noted include its appearance as a white powder or crystalline solid, with a melting point typically around 50-52°C. The boiling point is reported as 264.9°C at atmospheric pressure, though it may also be distilled under reduced pressure (e.g., 122-124°C at 11 Torr).

The significance of purity cannot be overstated when it comes to chemical intermediates like Methyl 4-Isocyanatobenzoate. Most suppliers and manufacturers will offer this compound at a minimum purity of 97%. For applications in sensitive areas such as pharmaceutical intermediate synthesis or the development of advanced materials, higher purity grades might be specified. Impurities can interfere with reaction pathways, reduce yields, and even lead to the formation of undesirable by-products that are costly and time-consuming to remove. Therefore, when you plan to buy Methyl 4-Isocyanatobenzoate, always verify the purity specifications and consider requesting a Certificate of Analysis (CoA) from the supplier.

The 'price' of Methyl 4-Isocyanatobenzoate is influenced by several factors. Firstly, the purity level is a major determinant; higher purity generally commands a higher price. Secondly, the quantity purchased plays a significant role. Bulk purchases from manufacturers often come with considerably lower per-unit costs compared to buying small research quantities. Thirdly, market dynamics, including raw material costs, production efficiency of the manufacturer, and global demand, all contribute to pricing. Suppliers in China are often competitive, offering a good balance of price and quality for many intermediates, including this one. When seeking to buy, it's advisable to compare quotes from multiple reputable manufacturers and suppliers to secure the best value.

In essence, Methyl 4-Isocyanatobenzoate is a versatile and reactive organic intermediate. Understanding its properties, prioritizing high purity, and being aware of the factors affecting its price are crucial steps for any chemist or procurement manager looking to acquire this compound for their projects.