Date published: 2026-5-30

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OR4S2 Inhibitors

OR4S2 Inhibitors encompass a range of chemical compounds that indirectly decrease the activity of the OR4S2 olfactory receptor by influencing the cellular and biochemical pathways that the receptor relies upon for its functionality. The mechanisms of action of these compounds are diverse, yet they converge on the modulation of calcium dynamics within olfactory sensory neurons, which is a critical factor for OR4S2 activity. Capsaicin and icilin, for example, activate TRPV1 and TRPM8 channels respectively, leading to increased intracellular calcium levels that can result in the desensitization of the OR4S2 receptor. Menthol and cinnamaldehyde similarly affect TRPM8 and TRPA1 channels, altering calcium homeostasis in a way that can lead to a decreased response of OR4S2 to its specific odorant triggers. Collectively, the various inhibitors detailed in the table have the potential to modify olfactory perception by altering the function of OR4S2 receptors through their action on different molecular targets within the olfactory sensory neurons. It's worth noting that while some of these compounds, like capsaicin and menthol, are naturally occurring and commonly found in everyday items (chili peppers and mint, respectively), others, such as HC-030031 and SKF-96365, are more often used in research settings to study olfactory mechanisms and sensory neuron behavior.

Items 1 to 10 of 11 total

Display:

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

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 is known to activate TRPV1 (transient receptor potential cation channel subfamily V member 1), which can lead to an influx of calcium ions into olfactory sensory neurons. An increase in intracellular calcium can desensitize olfactory receptors like OR4S2 by triggering calcium-dependent adaptation mechanisms.

(±)-Menthol

89-78-1sc-250299
sc-250299A
100 g
250 g
$39.00
$68.00
(0)

Menthol has been shown to modulate TRPM8 channels (transient receptor potential cation channel subfamily M member 8), influencing calcium dynamics within neurons. This modulation can indirectly lead to the decreased sensitivity of olfactory receptors such as OR4S2 through similar calcium-dependent desensitization processes.

Icilin

36945-98-9sc-201557
sc-201557A
10 mg
50 mg
$91.00
$257.00
9
(1)

Icilin stimulates TRPM8 channels, similar to menthol. The resultant alteration in calcium homeostasis within olfactory neurons can contribute to reduced OR4S2 activity, as persistent elevation of intracellular calcium is known to lead to receptor desensitization.

Cinnamic Aldehyde

104-55-2sc-294033
sc-294033A
100 g
500 g
$104.00
$228.00
(0)

Cinnamaldehyde acts on TRPA1 channels (transient receptor potential cation channel subfamily A member 1), affecting intracellular calcium levels. Elevated calcium could attenuate OR4S2 signaling by promoting rapid desensitization or adaptation of olfactory receptors.

HC-030031

349085-38-7sc-203994
sc-203994A
10 mg
50 mg
$89.00
$333.00
2
(1)

HC-030031 is an antagonist of TRPA1 channels. By inhibiting TRPA1, this compound can prevent the calcium influx that may indirectly lead to OR4S2 desensitization, thus dampening the receptor's sensitivity to odorants.

Ruthenium red

11103-72-3sc-202328
sc-202328A
500 mg
1 g
$188.00
$250.00
13
(1)

Ruthenium Red is a nonspecific blocker of many TRP channels. By inhibiting these channels, it could prevent calcium influx that is necessary for the normal function of olfactory receptors like OR4S2, leading to a decrease in their activity.

Thapsigargin

67526-95-8sc-24017
sc-24017A
1 mg
5 mg
$136.00
$446.00
114
(2)

Thapsigargin is a potent inhibitor of the sarco/endoplasmic reticulum Ca2+-ATPase (SERCA). By depleting intracellular calcium stores, thapsigargin can disrupt the signaling mechanisms of OR4S2, as these receptors rely on calcium signaling for proper function.

SK&F 96365

130495-35-1sc-201475
sc-201475B
sc-201475A
sc-201475C
5 mg
10 mg
25 mg
50 mg
$103.00
$158.00
$397.00
$656.00
2
(1)

SKF-96365 inhibits receptor-mediated calcium entry channels, which could result in a decrease in intracellular calcium levels that are necessary for OR4S2 receptor activation and subsequent olfactory signal transduction.

Mibefradil dihydrochloride

116666-63-8sc-204083
sc-204083A
10 mg
50 mg
$213.00
$865.00
4
(1)

Mibefradil is a T-type calcium channel blocker. By inhibiting these channels, mibefradil can lower calcium influx that contributes to the sensitization and responsiveness of olfactory receptors including OR4S2.

4-Methyl-2-(1-piperidinyl)-quinoline

5465-86-1sc-483337
25 mg
$430.00
(0)

ML204 is an inhibitor of TRPC4/TRPC5 channels (transient receptor potential cation channel subfamily C members 4 and 5). Inhibition of these channels can affect the depolarization events leading to OR4S2 receptor activation, reducing its ability to respond to odorants.