4-(4-FLUORO-1-NAPHTHALENYL)-6-(1-METHYLETHYL)-2-PYRIMIDINAMINE HYDROCHLORIDE
Synonym(s):2-Amino-4-(4-fluoronaphth-1-yl)-6-isopropylpyrimidine hydrochloride
- CAS NO.:199864-87-4
- Empirical Formula: C17H16FN3
- Molecular Weight: 281.33
- MDL number: MFCD20270616
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-07-02 08:55:41
What is 4-(4-FLUORO-1-NAPHTHALENYL)-6-(1-METHYLETHYL)-2-PYRIMIDINAMINE HYDROCHLORIDE?
Description
RS 127445 is an orally bioavailable and potent antagonist of the serotonin (5-HT) receptor subtype 5-HT2B (Ki = 0.32 nM). It is selective for 5-HT2B over other 5-HT receptor subtypes (Ki = >3 μM for 5-HT1A, 5-HT1B, 5-HT2A, 5-HT2C, 5-HT3, 5-HT5, and 5-HT6). RS 127445 reduces contraction of rat isolated stomach fundus (pA2 = 9.5) and lowers intracellular increases in calcium (IC50 = 0.04 nM) induced by 5-HT . It also blocks (±)-α-methyl-5-HT-induced relaxation of isolated rat jugular veins (pA2 = 9.95). RS 127445 (1-30 mg/kg) reduces peristaltic frequency and fecal output in mice in a dose-dependent manner. Systemic administration of RS 127445 (0.16 mg/kg) reduces basal, but not cocaine-induced, dopamine outflow in the nucleus accumbens of rats and decreases hyperlocomotion induced by cocaine (Item Nos. ISO60176 | 16186 | 22165) or quinpirole.
The Uses of 4-(4-FLUORO-1-NAPHTHALENYL)-6-(1-METHYLETHYL)-2-PYRIMIDINAMINE HYDROCHLORIDE
RS-127445 is a 5-HT2B receptor antagonist with modest activity against other 5-HT receptors. Selective 5-HT2B receptor antagonist
What are the applications of Application
RS 127445 hydrochloride is a high affinity SR-2B antagonist
What are the applications of Application
RS-127445 is a 5-HT2B receptor antagonist with modest activity against other 5-HT receptors
Biological Activity
High affinity 5-HT 2B receptor antagonist (pK i = 9.5). Displays 1000-fold selectivity for 5-HT 2B with good bioavailability.
in vitro
RS-127445 is a novel high affinity, selective 5-HT2B receptor antagonist devoid of detectable intrinsic activity. RS-127445 is found to have nM affinity and 1000 fold selectivity for the 5-HT2B receptor. RS-127445 is thus among the highest affinity, most selective 5- HT2B receptor ligands. RS-127445 potently blocks the 5-HT evoked increase in inositol phosphate formation and blocks the 5-HT evoked increases in intracellular calcium concentrations with a potency 1000 times greater than that of yohimbine.
in vivo
RS-127445 is readily absorbed with no obvious dose or route-dependent limitations and rapidly absorbed following both oral and intraperitoneal administration with peak plasma concentrations being achieved within 15 min of dosing. RS-127445 concentration in the plasma are achieved are proportional to the administered dose. RS-127445 administrated at dose of 5 mg/kg with approximately 60% of an intraperitoneal dose and 14% of the oral dose is bioavailable. RS-127445 concentration in the plasma is predicted to fully saturate accessible 5-HT2B receptors can be readily achieved and maintained in the rat. RS-127445 administered at 1 to 10 mg/kg with oral significantly inhibits visceral hypersensitivity up to 35 to 74% provoked by restraint stress. Oral RS-127445 produces a significant suppression of TNBS-induced visceral hypersensitivity (15 to 62% inhibition at 3 to 30 mg/ kg), although RS-127445 has no significant effect on the visceral nociceptive threshold of native rats. RS-127445 administrated orally with 1 to 30 mg/kg also dose -dependently reduce the restraint stress-induced defecation in native and TNBS-treated rats. . RS-127445 inhibits colonic motility and defecation.
References
[1] bonhaus d w, flippin l a, greenhouse r j, et al. rs‐127445: a selective, high affinity, orally bioavailable 5‐ht2b receptor antagonist[j]. british journal of pharmacology, 1999, 127(5): 1075-1082.
Properties of 4-(4-FLUORO-1-NAPHTHALENYL)-6-(1-METHYLETHYL)-2-PYRIMIDINAMINE HYDROCHLORIDE
Density | 1.213 |
storage temp. | Inert atmosphere,2-8°C |
solubility | ≥31.8 mg/mL in DMSO; insoluble in H2O; ≥33.15 mg/mL in EtOH |
form | solid |
color | White to off-white |
Safety information for 4-(4-FLUORO-1-NAPHTHALENYL)-6-(1-METHYLETHYL)-2-PYRIMIDINAMINE HYDROCHLORIDE
Computed Descriptors for 4-(4-FLUORO-1-NAPHTHALENYL)-6-(1-METHYLETHYL)-2-PYRIMIDINAMINE HYDROCHLORIDE
New Products
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