Fluticasone 17β-carboxylic acid is an intermediate in the synthesis of the glucocorticosteroid fluticasonepropionate .1References1. Zhou, J., Jin, C., and Su, W. Improved synthesis of fluticasonepropionate. Org. Process Res. Dev. 18(8), 928-933 (2014). Fluticasone 17β-carboxylic acid is an intermediate in the synthesis of the glucocorticosteroid fluticasonepropionate .1 References1. Zhou, J., Jin, C., and Su, W. Improved synthesis of fluticasonepropionate. Org. Process Res. Dev. 18(8), 928-933 (2014).