Toggle Nav
  • Menu
  • Setting

RF 9

Catalog No.
neuropeptide FF receptors antagonist
Grouped product items
SizePriceStock Qty
Ship with 5-10 days

Tel: +1-832-696-8203

Email: [email protected]

Worldwide Distributors


Ki: 58 nM for NPFF1; 75 nM for NPFF2

RF 9 is a neuropeptide FF receptors antagonist.

Neuropeptide FF (NPFF) has been isolated originally from bovine brain through its cross-reaction with antibodies to the molluscan cardioexcitory peptide FMRF-NH2, which possesses the similar C-terminal sequence. Recent studies shows that NPFF belongs to a neuropeptide family including two G protein-coupled receptors (NPFF1 and NPFF2) and two precursors (pro-NPFFA and pro-NPFFB). Both in vitro and in vivo studies have indicated that NPFF involves in a variety of biological actions.

In vitro: RF9 was found as a potent and selective NPFF receptor antagonist. RF9 was shown to be able to selectively bind to recombinant NPFF1 or NPFF2 receptors expressed in CHO or COS-1 cell and could also in vitro antagonize the agonism induced by NPFF and NPVF in the functional assays [1].

In vivo: Aminal in vivo study showed RF9 (30 nmol) injection failed to induce significant effect, but RF9 could completely antagonize the hypothermia of NPFF after cerebral administration in mice. Additionally, RF9 (30 nmol) co-injected in the third ventricle reduced the hypothermia induced by morphine or nociceptin/orphanin [2].

Clinical trial:N/A

[1] Fang Q,Wang YQ,He F,Guo J,Guo J,Chen Q,Wang R.  Inhibition of neuropeptide FF (NPFF)-induced hypothermia and anti-morphine analgesia by RF9, a new selective NPFF receptors antagonist. Regul Pept.2008 Apr 10;147(1-3):45-51.
[2] Wang YQ,Guo J,Wang SB,Fang Q,He F,Wang R.  Neuropeptide FF receptors antagonist, RF9, attenuates opioid-evoked hypothermia in mice. Peptides.2008 Jul;29(7):1183-90.

Chemical Properties

Physical AppearanceWhite lyophilised solid
StorageStore at -20°C
Cas No.876310-60-0
SolubilitySoluble in DMSO
Chemical Name(3S,5S,7S,Z)-N-((S,Z)-5-guanidino-1-hydroxy-1-(((S)-1-hydroxy-1-imino-3-phenylpropan-2-yl)imino)pentan-2-yl)adamantane-1-carbimidic acid
SDFDownload SDF
Canonical SMILESN=C(O)[[email protected]](/N=C(O)/[[email protected]](/N=C(O)/C12C[[email protected]@]3([H])C[[email protected]](C1)([H])C[[email protected]](C2)([H])C3)([H])CCCNC(N)=N)([H])CC4=CC=CC=C4
Shipping ConditionEvaluation sample solution: ship with blue ice. All other available sizes: ship with RT, or blue ice upon request.
General tipsFor obtaining a higher solubility, please warm the tube at 37°C and shake it in the ultrasonic bath for a while. Stock solution can be stored below -20°C for several months.

Quality Control

Quality Control & MSDS

View current batch:

Chemical structure

RF 9