7-Methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid(CAS: 1016505-59-1)

7-Methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid is a white crystalline solid with a molecular weight of approximately 257.22 g/mol. It has a pKa of about 4.5 and is slightly soluble in water. This compound is not highly reactive but can participate in amide and ester formation. It has good stability under normal conditions but may degrade at high temperatures or in strong acidic or basic environments.

7-Methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid can be synthesized by the condensation of 7-methylpyrazolo[1,5-a]pyrimidin-3-one with an appropriate carboxylic acid. This reaction typically involves the use of a catalytic amount of an acid or base to promote the formation of the amide bond. The yield is usually around 70-80%, and the reaction is selective for the formation of the desired amide product.

7-Methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid is primarily used in the pharmaceutical industry for the development of certain drugs. It also finds application in the synthesis of organic materials and as a precursor in the development of new materials such as polymers and sensors. Its use in semiconductors is less common but possible due to its electronic properties.

When handling 7-Methylpyrazolo[1,5-a]pyrimidine-3-carboxylic acid, it is recommended to wear appropriate personal protective equipment (PPE) such as gloves, goggles, and lab coat. It should be stored in a cool, dry place away from direct sunlight and heat sources. In case of a spill, use appropriate absorbent materials and follow the safety data sheet (SDS) for disposal. It is not a hazardous material but handling should be done with care to avoid skin contact and inhalation of dust.