PAR2 antagonist C391 (C391) is a selective PAR2 antagonist, potently inhibits peptidomimetic-induced PAR2 Ca2+ signalling with IC50 of 1.3 uM.C391 blocks both PAR2 Ca2+ and MAPK signalling pathways activated by peptidomimetics and/or proteinase activation.C391 effectively attenuated compound 48/80-induced thermal hyperalgesia in vivo.C391 blocked A. alternata-induced, PAR2-dependent Ca2+ and MAPK signalling in 16HBE14o- cells, as well as β-arrestin recruitment in HEK 293 cells.C391 effectively attenuated A. alternata-induced inflammation, mucus production, mucus cell hyperplasia and airway hyperresponsiveness in acute allergen-challenged murine models.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.