Prednisone 21-aldehyde is a derivative of the synthetic corticosteroid prednisone that has antiviral activity against influenza virus A-PR8 in embryonated chicken eggs. 22-hydroxy Prednisone is an unstable adduct of prednisone. It has been observed following incubation of prednisone with nornicotine. This product is a mixture of prednisone 21-aldehyde and 22-hydroxy prednisone.

Prednisone 21-aldehyde/22-hydroxy Prednisone

Methanol:Slightly soluble
DMSO:Slightly soluble
Chloroform:Slightly soluble
Powder: -20°C for 3 years
In solvent: -80°C for 2 years