SB-568849 is a novel and potent melanin-concentrating hormone receptor 1 (MCH R1) antagonist with a pKi of 7.7. SB-568849 possessed good receptor affinity and selectivity. This compound proved to be an antagonist with stability in vivo, an acceptable brain-blood ratio and oral bioavailability.

Physicochemical Properties

Molecular Formula	C28H31F3N2O3
Molecular Weight	500.5526
Exact Mass	500.228
CAS #	395679-53-5
Related CAS #	395679-53-5;395677-28-8 (wrong structure);
PubChem CID	10300618
Appearance	Typically exists as solid at room temperature
LogP	6.2
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	7
Rotatable Bond Count	10
Heavy Atom Count	36
Complexity	657
Defined Atom Stereocenter Count	0
InChi Key	JAIIZWCZERLWEK-UHFFFAOYSA-N
InChi Code	InChI=1S/C28H31F3N2O3/c1-5-33(6-2)17-18-36-25-16-15-24(19-26(25)35-4)32(3)27(34)22-9-7-20(8-10-22)21-11-13-23(14-12-21)28(29,30)31/h7-16,19H,5-6,17-18H2,1-4H3
Chemical Name	N-(4-(2-(diethylamino)ethoxy)-3-methoxyphenyl)-N-methyl-4'-(trifluoromethyl)-[1,1'-biphenyl]-4-carboxamide
Synonyms	SB-568849; SB 568849; SB568849.
HS Tariff Code	2934.99.9001
Storage	Powder-20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Shipping Condition	Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)

Biological Activity

ln Vitro	According to the radioligand binding displacement assay, SB-568849 is a selective SLC-1 antagonist with a pKi of 7.7. It completely inhibits MCH-induced increases in adrenocorticotropin Release factor (CRF) to basal levels without affecting the tissue when it is incubated for 45 minutes at a dose of 1 μM. SLC-1, a G protein-coupled receptor distributed throughout the brain and periphery, is the sole known MCH receptor in rats [2].
ln Vivo	Compound 15h, SB-568849, exhibits good selectivity and affinity for receptors. It was shown that SB-568849 was an antagonist with adequate brain-to-blood ratio, oral bioavailability, and in vivo stability. In addition to maintaining affinity, SB-568849 shows improved in vivo stability (CLb=16 mL/min/kg) and a respectable brain-to-blood ratio of 1. Additionally, SB-568849 has >30-fold selectivity for many monoamine receptors and a pKb of 7.7, making it an antagonist in the FLIPR assay [3].
References	[1]. Discovery of potent and stable conformationally constrained analogues of the MCH R1 antagonist SB-568849. Bioorg Med Chem Lett. 2006 Sep 15;16(18):4872-8. [2]. Effect of direct injection of melanin-concentrating hormone into the paraventricular nucleus: further evidence for a stimulatory role in the adrenal axis via SLC-1. J Neuroendocrinol. 2003 Mar;15(3):268-72. [3]. SAR of biphenyl carboxamide ligands of the human melanin-concentrating hormone receptor 1 (MCH R1): discovery of antagonist SB-568849. Bioorg Med Chem Lett. 2006 Sep 15;16(18):4865-71.

Solubility Data

Solubility (In Vitro)

May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples

Solubility (In Vivo)

Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples. Injection Formulations (e.g. IP/IV/IM/SC) Injection Formulation 1: DMSO : Tween 80： Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution → 50 μL Tween 80 → 850 μL Saline) *Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution. Injection Formulation 2: DMSO : PEG300 ：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO → 900 μL Corn oil) Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals). Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO → 900 μL (20% SBE-β-CD in saline)] *Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin → 500 μL Saline) Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO → 100 μLPEG300 → 200 μL castor oil → 650 μL Saline) Injection Formulation 7: Ethanol : Cremophor : Saline = 10： 10 : 80 (i.e. 100 μL Ethanol → 100 μL Cremophor → 800 μL Saline) Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH → 900 μL Corn oil) Injection Formulation 10: EtOH : PEG300：Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH → 400 μLPEG300 → 50 μL Tween 80 → 450 μL Saline) Oral Formulations Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium) Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals). Oral Formulation 3: Dissolved in PEG400 Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose Oral Formulation 6: Mixing with food powders Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.  (Please use freshly prepared in vivo formulations for optimal results.)

Preparing Stock Solutions		1 mg	5 mg	10 mg
	1 mM	1.9978 mL	9.9890 mL	19.9780 mL
	5 mM	0.3996 mL	1.9978 mL	3.9956 mL
	10 mM	0.1998 mL	0.9989 mL	1.9978 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.