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Routes of administration | Inhalation |
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Formula | C34H39N3O6S |
Molar mass | 617.76 g·mol−1 |
PF-610355 (also known asPF-00610355 orPF-610,355) is an inhalable[1]ultra-long-acting β2 adrenoreceptor agonist[2] (ultra-LABA) that was investigated as a treatment ofasthma andCOPD byPfizer.[3] It utilizes asulfonamideagonist headgroup, that confers high levels of intrinsiccrystallinity that could relate to the acidic sulfonamide motif supporting azwitterionic form in the solid state. Optimization ofpharmacokinetic properties minimized systemic exposure following inhalation and reduced systemically mediatedadverse events.[4] Itsin vivo duration on action confirmed its potential for once-daily use in humans.[5]
The investigation and development of PF-610355 were discontinued in 2011,[6] likely for strategic and regulatory reasons.[7]
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