FK 888
Synonym(s):(4R)-4-Hydroxy-1-[(1-methyl-1H-indol-3-yl)carbonyl]-L-prolyl-N-methyl-3-(2-naphthalenyl)-N-(phenylmethyl)-L-alaninamide hydrate;FK888 hydrate;N2-[(4R)-4-hydroxyl-1-(1-methyl-1H-indol-3-yl)carbonyl-L-prolyl]-N-methyl-N-phenylmethyl-3-(2-naphthyl)-L-alaninamide hydrate
- CAS NO.：138449-07-7
- Empirical Formula: C36H36N4O4
- Molecular Weight: 588.7
- MDL number: MFCD00274042
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-28 05:54:16
What is FK 888?
The Uses of FK 888
FK 888 is a neurokinin NK1 receptor antagonist, which is active both in vivo and in vitro.
Definition
ChEBI: (2S,4R)-4-hydroxy-1-[(1-methyl-3-indolyl)-oxomethyl]-N-[(2S)-1-[methyl-(phenylmethyl)amino]-3-(2-naphthalenyl)-1-oxopropan-2-yl]-2-pyrrolidinecarboxamide is a peptide.
Biological Activity
Selective, high affinity tachykinin NK 1 receptor antagonist (K i = 0.69 nM) that displays 320-fold selectivity for human over rat NK 1 receptors. Inhibits substance P-induced contraction of isolated guinea pig trachea (IC 50 = 32 nM) and inhibits substance P-induced airway constriction in vivo following i.v. and oral administration.
Storage
Store at -20°C
Properties of FK 888
| Boiling point: | 901.9±65.0 °C(Predicted) |
| Density | 1.26±0.1 g/cm3(Predicted) |
| storage temp. | Store at -20°C |
| solubility | DMSO: ≥13mg/mL |
| form | powder |
| pka | 13.01±0.40(Predicted) |
| color | white to tan |
| optical activity | [α]/D -135 to -145°, c = 1 in methanol |
Safety information for FK 888
Computed Descriptors for FK 888
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