SB-242084 HCl

    WARNING: This product is for research use only, not for human or veterinary use.

MedKoo CAT#: 522509

CAS#: 1049747-87-6 (HCl)

Description: SB-242084 is a psychoactive drug and research chemical which acts as a selective antagonist for the 5HT2C receptor. It has anxiolytic effects, and enhances dopamine signaling in the limbic system, as well as having complex effects on the dopamine release produced by cocaine, increasing it in some brain regions but reducing it in others. It has been shown to increase the effectiveness of the selective serotonin reuptake inhibitor (SSRI) class of antidepressants, and may also reduce their side effects. In animal studies, SB-242084 produced stimulant-type activity and reinforcing effects, somewhat similar to but much weaker than cocaine or amphetamines.

Chemical Structure

SB-242084 HCl
CAS# 1049747-87-6 (HCl)

Theoretical Analysis

MedKoo Cat#: 522509
Name: SB-242084 HCl
CAS#: 1049747-87-6 (HCl)
Chemical Formula: C21H21Cl3N4O2
Exact Mass:
Molecular Weight: 467.78
Elemental Analysis: C, 53.92; H, 4.53; Cl, 22.74; N, 11.98; O, 6.84

Price and Availability

Size Price Availability Quantity
10.0mg USD 250.0 Same day
25.0mg USD 450.0 Same day
50.0mg USD 750.0 Same day
100.0mg USD 1250.0 Same day
200.0mg USD 1650.0 Same day
500.0mg USD 2650.0 Same day
1.0g USD 3950.0 2 Weeks
2.0g USD 6950.0 2 Weeks
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Related CAS #: 1049747-87-6 (HCl)   181632-25-7 (free base)  

Synonym: SB-242084; SB 242084; SB242084; SB-242084 HCl

IUPAC/Chemical Name: 6-chloro-2,3-dihydro-5-methyl-N-[6-[(2-methyl-3-pyridinyl)oxy]-3-pyridinyl]-1H-indole-1-carboxamide, dihydrochloride


InChi Code: InChI=1S/C21H19ClN4O2.2ClH/c1-13-10-15-7-9-26(18(15)11-17(13)22)21(27)25-16-5-6-20(24-12-16)28-19-4-3-8-23-14(19)2;;/h3-6,8,10-12H,7,9H2,1-2H3,(H,25,27);2*1H

SMILES Code: O=C(N1CCC2=C1C=C(Cl)C(C)=C2)NC3=CC=C(OC4=CC=CN=C4C)N=C3.[H]Cl.[H]Cl

Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO, not in water

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Preparing Stock Solutions

The following data is based on the product molecular weight 467.78 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL

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1: Manvich DF, Kimmel HL, Cooper DA, Howell LL. The serotonin 2C receptor antagonist SB 242084 exhibits abuse-related effects typical of stimulants in squirrel monkeys. J Pharmacol Exp Ther. 2012 Sep;342(3):761-9. doi: 10.1124/jpet.112.195156. Epub 2012 Jun 8. PubMed PMID: 22685342; PubMed Central PMCID: PMC3422522.

2: Andrade AL, Abrahao KP, Goeldner FO, Souza-Formigoni ML. Administration of the 5-HT2C receptor antagonist SB-242084 into the nucleus accumbens blocks the expression of ethanol-induced behavioral sensitization in Albino Swiss mice. Neuroscience. 2011 Aug 25;189:178-86. doi: 10.1016/j.neuroscience.2011.05.028. Epub 2011 May 27. PubMed PMID: 21658435.

3: Strong PV, Greenwood BN, Fleshner M. The effects of the selective 5-HT(2C) receptor antagonist SB 242084 on learned helplessness in male Fischer 344 rats. Psychopharmacology (Berl). 2009 May;203(4):665-75. doi: 10.1007/s00213-008-1413-3. Epub 2008 Nov 27. PubMed PMID: 19037632.

4: Kantor S, Jakus R, Molnar E, Gyongyosi N, Toth A, Detari L, Bagdy G. Despite similar anxiolytic potential, the 5-hydroxytryptamine 2C receptor antagonist SB-242084 [6-chloro-5-methyl-1-[2-(2-methylpyrid-3-yloxy)-pyrid-5-yl carbamoyl] indoline] and chlordiazepoxide produced differential effects on electroencephalogram power spectra. J Pharmacol Exp Ther. 2005 Nov;315(2):921-30. Epub 2005 Aug 5. PubMed PMID: 16085759.

5: Martin JR, Ballard TM, Higgins GA. Influence of the 5-HT2C receptor antagonist, SB-242084, in tests of anxiety. Pharmacol Biochem Behav. 2002 Apr;71(4):615-25. PubMed PMID: 11888553.

6: Bagdy G, Graf M, Anheuer ZE, Modos EA, Kantor S. Anxiety-like effects induced by acute fluoxetine, sertraline or m-CPP treatment are reversed by pretreatment with the 5-HT2C receptor antagonist SB-242084 but not the 5-HT1A receptor antagonist WAY-100635. Int J Neuropsychopharmacol. 2001 Dec;4(4):399-408. PubMed PMID: 11806866.

7: Hemrick-Luecke SK, Evans DC. Comparison of the potency of MDL 100,907 and SB 242084 in blocking the serotonin (5-HT)(2) receptor agonist-induced increases in rat serum corticosterone concentrations: evidence for 5-HT(2A) receptor mediation of the HPA axis. Neuropharmacology. 2002 Feb;42(2):162-9. PubMed PMID: 11804612.

8: Di Matteo V, Di Giovanni G, Di Mascio M, Esposito E. SB 242084, a selective serotonin2C receptor antagonist, increases dopaminergic transmission in the mesolimbic system. Neuropharmacology. 1999 Aug;38(8):1195-205. PubMed PMID: 10462132.

9: Bromidge SM, Duckworth M, Forbes IT, Ham P, King FD, Thewlis KM, Blaney FE, Naylor CB, Blackburn TP, Kennett GA, Wood MD, Clarke SE. 6-Chloro-5-methyl-1-[[2-[(2-methyl-3-pyridyl)oxy]-5-pyridyl]carbamoyl]- indoline (SB-242084): the first selective and brain penetrant 5-HT2C receptor antagonist. J Med Chem. 1997 Oct 24;40(22):3494-6. PubMed PMID: 9357513.

10: Kennett GA, Wood MD, Bright F, Trail B, Riley G, Holland V, Avenell KY, Stean T, Upton N, Bromidge S, Forbes IT, Brown AM, Middlemiss DN, Blackburn TP. SB 242084, a selective and brain penetrant 5-HT2C receptor antagonist. Neuropharmacology. 1997 Apr-May;36(4-5):609-20. PubMed PMID: 9225286.

Additional Information

Related CAS#
1049747-87-6 (HCl salt);
181632-25-7 (free base)