Date published: 2026-4-22

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Clock Inhibitors

Clock inhibitors encompass a diverse array of compounds designed to directly or indirectly modulate Clock, a crucial component in circadian rhythm regulation. These inhibitors exert their effects through various mechanisms, impacting Clock at different levels of regulation and offering valuable insights into the intricate network of molecular events governing circadian rhythm dynamics. One notable example is SR9009, a REV-ERB agonist that directly targets Clock. By binding to REV-ERB receptors, SR9009 influences the molecular circadian clock and alters Clock's transcriptional activity. This direct interaction highlights the specificity of certain inhibitors in directly modulating Clock, shedding light on the intricate regulatory mechanisms that govern the core components of circadian rhythm. On the other hand, GSK-J4, a JMJD3 inhibitor, provides an indirect avenue to influence Clock by disrupting the epigenetic regulation of JMJD3. This illustrates the complex interplay between epigenetic modifications and circadian rhythm regulation, emphasizing the role of chromatin dynamics in the modulation of Clock and the broader circadian system. Nobiletin, a flavonoid, takes a different indirect approach by activating the Nrf2/ARE signaling pathway. This highlights the connection between cellular redox status and circadian rhythm, showcasing how environmental cues and cellular signaling pathways converge to influence Clock and circadian dynamics. CHIR-99021, a GSK-3β inhibitor, operates indirectly through the Wnt/β-catenin pathway. This emphasizes the significance of signaling cascades in circadian regulation, showcasing how intracellular signaling networks intersect with the circadian clock machinery to modulate Clock and overall circadian rhythm dynamics. SRT1720, a SIRT1 activator, represents another direct modulator of Clock by enhancing SIRT1 activity. This showcases the role of post-translational modifications in circadian rhythm modulation, providing a glimpse into the intricate regulatory mechanisms that fine-tune Clock activity. These examples collectively illustrate the diversity of pathways and processes that intersect with Clock regulation.

Items 1 to 10 of 11 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

GSK-J4

1373423-53-0sc-507551
100 mg
$1275.00
(0)

GSK-J4, a JMJD3 inhibitor, indirectly influences Clock by targeting the Jumonji domain-containing protein 3 (JMJD3). By inhibiting JMJD3, GSK-J4 modulates the epigenetic landscape, indirectly affecting Clock expression. The compound acts as an indirect inhibitor by disrupting the epigenetic regulation of Clock, thereby influencing circadian rhythm at the chromatin level.

Nobiletin

478-01-3sc-202733
10 mg
$189.00
2
(0)

Nobiletin, a flavonoid, indirectly modulates Clock by affecting the Nrf2/ARE signaling pathway. By activating Nrf2, Nobiletin influences the expression of Clock and its downstream targets. The compound acts as an indirect inhibitor by altering cellular redox status, thereby impacting Clock expression and circadian rhythm regulation through the Nrf2/ARE pathway.

GSK-3 Inhibitor XVI

252917-06-9sc-221691
sc-221691A
5 mg
25 mg
$180.00
$610.00
4
(1)

CHIR-99021, a GSK-3β inhibitor, indirectly influences Clock by modulating the Wnt/β-catenin pathway. By inhibiting GSK-3β, CHIR-99021 activates Wnt signaling, indirectly impacting Clock expression and circadian rhythm regulation. The compound acts as an indirect inhibitor by influencing the Wnt/β-catenin pathway, a signaling cascade intricately linked to the regulation of Clock and circadian rhythms.

5-Aza-2′-Deoxycytidine

2353-33-5sc-202424
sc-202424A
sc-202424B
25 mg
100 mg
250 mg
$218.00
$322.00
$426.00
7
(1)

5-Aza-2'-deoxycytidine, a DNA methyltransferase inhibitor, indirectly modulates Clock by influencing DNA methylation patterns. By inhibiting DNA methyltransferases, it alters the epigenetic landscape, indirectly affecting Clock expression. The compound acts as an indirect inhibitor by disrupting DNA methylation, thereby influencing circadian rhythm regulation through epigenetic modifications.

PD 98059

167869-21-8sc-3532
sc-3532A
1 mg
5 mg
$40.00
$92.00
212
(2)

PD98059, a MEK inhibitor, indirectly influences Clock by targeting the MAPK/ERK signaling pathway. By inhibiting MEK, PD98059 modulates downstream events, indirectly impacting Clock expression and circadian rhythm regulation. The compound acts as an indirect inhibitor by affecting the MAPK/ERK pathway, a signaling cascade involved in the regulation of Clock and circadian rhythms.

SRT1720

1001645-58-4sc-364624
sc-364624A
5 mg
10 mg
$197.00
$364.00
13
(1)

SRT1720, a SIRT1 activator, directly modulates Clock by activating the NAD-dependent deacetylase SIRT1. This activation influences the deacetylation of Clock, impacting circadian rhythm regulation at the post-translational level. The compound acts as a direct inhibitor by enhancing SIRT1 activity, leading to the modification of Clock and modulation of circadian rhythms.

Dorsomorphin dihydrochloride

1219168-18-9sc-361173
sc-361173A
10 mg
50 mg
$186.00
$751.00
28
(2)

Dorsomorphin, an AMPK inhibitor, indirectly influences Clock by modulating the AMPK signaling pathway. By inhibiting AMPK, Dorsomorphin alters downstream events, indirectly affecting Clock expression and circadian rhythm regulation. The compound acts as an indirect inhibitor by influencing the AMPK pathway, a key regulator of cellular energy status and circadian rhythms through interactions with Clock.

JIB 04

199596-05-9sc-397040
20 mg
$177.00
(0)

JIB-04, a Jumonji histone demethylase inhibitor, indirectly modulates Clock by targeting Jumonji histone demethylases. By inhibiting these enzymes, JIB-04 influences the epigenetic regulation of Clock, indirectly affecting its expression. The compound acts as an indirect inhibitor by disrupting histone demethylation processes, thereby impacting the epigenetic control of Clock and circadian rhythm regulation.

SGC-CBP30

1613695-14-9sc-473871
sc-473871A
5 mg
10 mg
$178.00
$338.00
(0)

SGC-CBP30, a CBP/p300 bromodomain inhibitor, indirectly influences Clock by targeting the bromodomain-containing proteins CBP and p300. By inhibiting these proteins, SGC-CBP30 disrupts epigenetic processes, indirectly affecting Clock expression and circadian rhythm regulation. The compound acts as an indirect inhibitor by modulating the bromodomain-dependent epigenetic regulation of Clock and circadian rhythms.

SB 431542

301836-41-9sc-204265
sc-204265A
sc-204265B
1 mg
10 mg
25 mg
$82.00
$216.00
$416.00
48
(1)

SB431542, a TGF-β receptor inhibitor, indirectly modulates Clock by affecting the TGF-β signaling pathway. By inhibiting TGF-β receptors, SB431542 alters downstream events, indirectly influencing Clock expression and circadian rhythm regulation. The compound acts as an indirect inhibitor by disrupting the TGF-β signaling pathway, a regulatory mechanism intricately linked to the modulation of Clock and circadian rhythms.