For research use only.

Catalog No.S2677

5 publications

BRL-15572(dihydrochloride) Chemical Structure

Molecular Weight(MW): 479.87

BRL-15572 is a 5-HT1D receptor antagonist with pKi of 7.9, also shows a considerable affinity at 5-HT1A and 5-HT2B receptors, exhibiting 60-fold selectivity over 5-HT1B receptor.

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Description BRL-15572 is a 5-HT1D receptor antagonist with pKi of 7.9, also shows a considerable affinity at 5-HT1A and 5-HT2B receptors, exhibiting 60-fold selectivity over 5-HT1B receptor.
Features A selective 5-HT1D/1B receptor antagonist.
5-HT1D [1] 5-HT1A [1] 5-HT2B [1] 5-HT2A [1] 5-HT7 [1]
7.9(pKi) 7.7(pKi) 7.4(pKi) 6.6(pKi) 6.3(pKi)
In vitro

BRL-15572 displays high affinity and selectivity for h5-HT1D receptors. BRL-15572 has 60-fold higher affinity for h5-HT1D than 5-HT1B receptors. BRL-15572 binds to h5-HT1B and h5-HT1D receptors with pKB of less than 6 and 7.1, respectively. BRL-15572 stimulates [35S]GTP γ S binding in both cell lines, with potencies that correlated with their receptor binding affinities in both h5-HT1B and h5-HT1D receptor expressing cell lines. BRL-15572 reveals receptor binding affinities for 5-HT1A, 5-HT1B, 5-HT1E, 5-HT1F, 5-HT2A, 5-HT2B, 5-HT2C, 5-HT6 and 5-HT7 with pKi of 7.7, 6.1, 5.2, 6.0, 6.6, 7.4, 6.2, 5.9 and 6.3, respectively. In the h5-HT1D cell line, both BRL-15572 (1 µM) shifts the 5-HT concentration response curve with pKB of 7.1, respectively. BRL-15572 does have moderately high affinity at human 5-HT1A and 5-HT2B receptors. [1] In human atrial appendages, the electrically evoked tritium overflow is inhibited by 5-HT in a manner susceptible to antagonism by BRL-15572 (300 nM; 23 times Ki at h5-HT1D receptors). [2] The inhibitory effect of 5-HT on the K+-evoked overflow of glutamate is antagonized by the h5-HT1D receptor ligand BRL-15572. BRL-15572 (1 μM) is unable to modify the effect of 5-HT at the autoreceptor regulating [3H]5-HT release. [3] The selective 5-HT1D/1B receptor antagonist BRL 15572 inhibits the effect of the agonist L-694 247. [4]

In vivo In diabetic pithed rats, administration of the selective 5-HT1D receptor antagonist BRL-15572 (2 mg/kg) does not modify the decreased HR induced by vagal electrical stimulation. The effects of L-694,247 (50 μg/kg), a selective agonist for non-rodent 5-HT1B and 5-HT1D receptors, on the vagally induced bradycardia are not apparent after pretreatment with BRL-15572. [5]


Cell Research:[1]
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  • Cell lines: CHO cells expressing the h5-HT1B or h5-HT1D receptors
  • Concentrations: 0 μM -10 μM
  • Incubation Time: 30 minutes
  • Method: [35S]GTPγS binding studies. [35S]GTPγS binding studies in CHO cells expressing the h5-HT1B or h5-HT1D receptors are performed. In brief, membranes from 1 × 106 cells are preincubated at 30°C for 30 minutes, in HEPES buffer (HEPES [20 mM], MgCl2 [3 mM], NaCl [100 mM], ascorbate [0.2 mM]), containing GDP (10 µ M), with or without BRL-15572. The reaction is started by the addition of 10 µL of [35S]GTPγS (100 pM, assay concentration) followed by a further 30 minutes incubation at 30°C. Non-specific binding is determined by addition of unlabelled GTPγS (10 µM), prior to the addition of cells. The reaction is stopped by rapid filtration using Whatman GF/B grade filters followed by five washes with ice-cold HEPES buffer. Radioactivity is determined by liquid scintillation spectrometry.
    (Only for Reference)
Animal Research:[5]
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  • Animal Models: Male Wistar rats with diabetes
  • Dosages: 1 mg/kg, 2 mg/kg
  • Administration: Administered via i.v.
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 96 mg/mL (200.05 mM)
Ethanol 40 mg/mL (83.35 mM)
Water Insoluble
In vivo Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
30% propylene glycol, 5% Tween 80, 65% D5W
For best results, use promptly after mixing.
20 mg/mL

* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.

Chemical Information

Molecular Weight 479.87


CAS No. 193611-72-2
Storage powder
in solvent
Synonyms N/A
Smiles Cl.Cl.OC(CN1CCN(CC1)C2=CC(=CC=C2)Cl)C(C3=CC=CC=C3)C4=CC=CC=C4

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID