GB 2760-1996 stipulates it as a permitted food flavoring, and it is also a pharmaceutical intermediate and material intermediate.

It is used as a spice, an intermediate in medicine, etc.

It is used as an organic synthesis raw material and a pharmaceutical intermediate.

Light yellow to pale yellow solid. Uses: It is used as a pharmaceutical intermediate, mainly for the synthesis of fluoroquinolone drugs such as spafloxacin, piperate, norfloxacin, and other quinolone drugs, rifampicin, piazosin, etc., and veterinary drugs such as piperazine citrate, phosphate, and monohydrochlorate. It can also be used as a preservative, corrosion inhibitor, and various additives, etc.

Transparent, colorless to yellow liquid, mainly used for the production of pyrrole, thiophene, tetrahydrofuran, etc. The production of the drug furacilin and the adhesive for making the core of the hot core box process.

It is mainly used for manufacturing molecular sieve catalysts.