Date published: 2026-4-24

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MC4-R Activators

The chemical class of MC4-R activators includes a variety of compounds that indirectly influence the activity of the melanocortin 4 receptor. These chemicals act through diverse mechanisms, primarily focused on modulating cyclic adenosine monophosphate (cAMP) levels, a critical second messenger in G protein-coupled receptor signaling pathways. By enhancing cAMP levels, either through direct stimulation of its production or inhibition of its degradation, these activators potentiate the signaling cascade downstream of MC4-R. For instance, compounds like forskolin, caffeine, and theophylline work by increasing intracellular cAMP levels, thereby amplifying the signaling through G protein-coupled receptors, including MC4-R. This amplification can enhance the receptor's natural response to its endogenous ligands. Similarly, agents such as isoproterenol and epinephrine, through their action on adrenergic receptors, lead to an increase in cAMP, subsequently influencing MC4-R signaling. The action of these compounds is particularly significant given the role of MC4-R in regulating energy balance and appetite. Moreover, compounds like capsaicin and green tea extract, known for their metabolic effects, may exert an indirect influence on MC4-R signaling pathways. The precise mechanisms through which they impact MC4-R activity remain an area of ongoing research but are believed to involve modulation of metabolic processes that intersect with MC4-R pathways. Such indirect activators contribute to the complexity of MC4-R regulation, highlighting the receptor's integration into broader metabolic and physiological networks.

Items 1 to 10 of 12 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Ro 27-3225 trifluoroacetate salt

sc-311523
1 mg
$190.00
(0)

Ro 27-3225 trifluoroacetate salt acts as a selective agonist for the MC4-R receptor, showcasing a distinct binding affinity that promotes unique conformational changes in the receptor structure. This interaction triggers a series of downstream signaling events, primarily through the activation of G-proteins, which modulate intracellular calcium levels. The compound's trifluoroacetate moiety enhances solubility and stability, facilitating its engagement with the receptor and influencing metabolic pathways.

THIQ

312637-48-2sc-204343
sc-204343A
1 mg
10 mg
$260.00
$1200.00
1
(1)

THIQ functions as a selective modulator of the MC4-R receptor, exhibiting a unique interaction profile that stabilizes specific receptor conformations. This compound engages in intricate molecular dynamics, influencing the receptor's affinity for G-proteins and altering downstream signaling cascades. Its structural features promote enhanced receptor-ligand interactions, leading to distinct alterations in cellular signaling pathways and metabolic regulation. The compound's unique properties contribute to its role in receptor modulation.

Forskolin

66575-29-9sc-3562
sc-3562A
sc-3562B
sc-3562C
sc-3562D
5 mg
50 mg
1 g
2 g
5 g
$78.00
$153.00
$740.00
$1413.00
$2091.00
73
(3)

Forskolin, extracted from the plant Coleus forskohlii, activates adenylyl cyclase, leading to an increase in cAMP levels. Elevated cAMP can enhance G protein-coupled receptor signaling, including MC4-R, by potentiating the pathway downstream of the receptor activation.

Caffeine

58-08-2sc-202514
sc-202514A
sc-202514B
sc-202514C
sc-202514D
50 g
100 g
250 g
1 kg
5 kg
$33.00
$67.00
$97.00
$192.00
$775.00
13
(1)

Caffeine, a central nervous system stimulant, can inhibit phosphodiesterases, thus preventing cAMP degradation. This increase in cAMP can enhance MC4-R signaling indirectly, as cAMP is a second messenger in MC4-R pathways.

Theophylline

58-55-9sc-202835
sc-202835A
sc-202835B
5 g
25 g
100 g
$20.00
$32.00
$85.00
6
(0)

Theophylline, similar to caffeine, acts as a phosphodiesterase inhibitor, leading to increased cAMP levels. This elevation can indirectly influence MC4-R signaling pathways, enhancing their activity.

Rolipram

61413-54-5sc-3563
sc-3563A
5 mg
50 mg
$77.00
$216.00
18
(1)

Rolipram, a selective phosphodiesterase-4 inhibitor, leads to increased cAMP levels in cells. Elevated cAMP can indirectly enhance MC4-R activity by potentiating the signaling pathways downstream of the receptor.

Isoproterenol Hydrochloride

51-30-9sc-202188
sc-202188A
100 mg
500 mg
$28.00
$38.00
5
(0)

Isoproterenol, a non-selective beta-adrenergic agonist, can increase cAMP levels via beta-adrenergic receptors, indirectly influencing MC4-R signaling through enhanced G protein-coupled receptor signaling.

(−)-Epinephrine

51-43-4sc-205674
sc-205674A
sc-205674B
sc-205674C
sc-205674D
1 g
5 g
10 g
100 g
1 kg
$41.00
$104.00
$201.00
$1774.00
$16500.00
(1)

Epinephrine, a hormone and a neurotransmitter, acts on various adrenergic receptors to increase cAMP levels. This indirect action can enhance MC4-R signaling pathways.

Capsaicin

404-86-4sc-3577
sc-3577C
sc-3577D
sc-3577A
50 mg
250 mg
500 mg
1 g
$96.00
$160.00
$240.00
$405.00
26
(1)

Capsaicin, the active component in chili peppers, can influence various metabolic processes. While its direct action on MC4-R is not clear, its role in energy metabolism suggests it may indirectly affect MC4-R signaling pathways.

(−)-Epigallocatechin Gallate

989-51-5sc-200802
sc-200802A
sc-200802B
sc-200802C
sc-200802D
sc-200802E
10 mg
50 mg
100 mg
500 mg
1 g
10 g
$43.00
$73.00
$126.00
$243.00
$530.00
$1259.00
11
(1)

Green Tea Extract, containing compounds like EGCG, can influence metabolic pathways. These compounds may indirectly affect MC4-R signaling through their roles in energy metabolism and cAMP modulation.