P305+P351+P338：IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.
Description
5-Hydroxy-1-benzothiophene-3-carboxylic acid is used as a reactant in the synthesis and antiallergenic activity of derivatives of prostaglandin D2 receptor antagonists with a 6,6-dimethylbicyclo[3.1.1]heptane skeleton.
![5-hydroxybenzo[b]thiophene-3-carboxylic acid](https://www.chemicalbook.com/CAS2/GIF/16304-39-5.gif)
