JP4-039，25MG，SML2807-25MG，Sigma

Biochem/physiol Actions

JP4-039 is an electron-/reactive oxygen species (ROS)-scavenging GS-nitroxide composed of 4-amino-TEMPO and a truncated gramicidin S (GS) mitochrondria-targeting sequence. JP4-039 is a superior irradiation mitigator than XJB-5-131 (33% vs. 20% mice survial rate on day 35 with respective compound; 23.6 μmol/kg iv. 24 hr post 9.5 Gy whole body irradiation), while displaying weaker anti-ferroptotic potency (EC₅₀ = 3.58 μM/1.27 μM against 10 μM erastin-/2 μM RSL3-induced HT-1080 ferroptosis vs. 114 nM/68 nM with XJB-5-131) due to lower lipophilicity & mitochondria enrichment. Typical dosing range: 40 nM-10 μM in cultures and 10-20 mg/kg in mice (im., ip., iv.) in vivo.
Mitochondrial-targeted reactive oxygen species (ROS)-scavenging gramicidin S (GS)-nitroxide with in vitro and in vivo efficacy against irradiation-induced damage.