5-Methyl-4-isoxazolecarboxylic acid (CAS NO : 42831-50-5)

5-Methyl-4-isoxazolecarboxylic acid (CAS 42831-50-5) is a vital building block in the API intermediates market, primarily serving as the primary precursor for the synthesis of Leflunomide and other isoxazole-based therapeutics where a Pharma/API purity 99% is mandatory to meet stringent FDA quality standards. 5-Methylisoxazole-4-carboxylic acid is increasingly sought after by US-based CDMOs who provide custom synthesis services to pharmaceutical innovators looking to shorten lead times and navigate global sourcing shifts by securing high purity fine chemicals within domestic supply chains. 4-Isoxazolecarboxylic acid, 5-methyl- is also utilized in general industry applications at a purity of 98%, where its functionalized heterocyclic core acts as a high-performance intermediate for specialty agrochemical development, driving the need for a reliable bulk chemical supplier capable of providing robust technical documentation and regulatory compliance. We are an established 5-Methyl-4-isoxazolecarboxylic acid intermediates supplier with >= 99% purity in the united states, ensuring minimal carry-over of impurities in the final API, and a broad range of various pharmaceutical intermediates for API manufacturers and finished formulators, providing comprehensive analytical (HPLC/NMR/MS) and supporting 5-Methyl-4-isoxazolecarboxylic acid COA/TDS/SDS region-specific regulatory support, reliable lead times, worldwide supply chain capabilities