Date published: 2026-5-16

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μ-crystallin Inhibitors

Chemical inhibitors of μ-crystallin can modulate the protein's activity through various mechanisms, primarily centered on the disruption of thyroid hormone binding. Phenylbutazone, Methimazole, and Propylthiouracil are chemicals that can directly or indirectly affect the function of μ-crystallin. Phenylbutazone achieves this inhibition by binding to the same sites on μ-crystallin that are typically reserved for thyroid hormones, resulting in competitive inhibition. Methimazole and Propylthiouracil, on the other hand, interfere with the synthesis of thyroid hormones by inhibiting thyroid peroxidase, an enzyme crucial for hormone production. With fewer thyroid hormones available to interact with μ-crystallin, the protein's activity is consequently reduced.

Additionally, flavonoids such as Quercetin, Kaempferol, and Myricetin, along with other compounds Genistein, can bind to the thyroid hormone receptor sites on μ-crystallin. This binding can prevent the interaction of thyroid hormones with μ-crystallin, which is essential for its metabolic regulatory functions. Bisphenol A also participates in this inhibition by binding to the thyroid hormone receptor, which would otherwise facilitate the activity of μ-crystallin through hormone interaction. Furthermore, Raloxifene and Tamoxifen, by acting on estrogen receptors, can influence the expression of enzymes involved in the synthesis of thyroid hormones, leading to reduced hormone levels that are necessary for the optimal functioning of μ-crystallin. Rivaroxaban, albeit through a different pathway, can alter thyroid hormone profiles by affecting liver enzymes responsible for hormone metabolism, indirectly leading to a decrease in the activation of μ-crystallin by the thyroid hormones.

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Items 1 to 10 of 11 total

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Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Phenylbutazone

50-33-9sc-204843
5 g
$32.00
1
(0)

Phenylbutazone binds to thyroid hormone-binding sites on μ-crystallin, competitively inhibiting the binding of thyroid hormones which are crucial for μ-crystallin function in cellular metabolism regulation, thereby inhibiting the protein's activity.

Methimazole

60-56-0sc-205747
sc-205747A
10 g
25 g
$70.00
$112.00
4
(0)

Methimazole inhibits the peroxidase enzyme in the thyroid and could reduce the synthesis of thyroid hormones, which are known to bind μ-crystallin; less available thyroid hormone would result in reduced activation of μ-crystallin, thus functionally inhibiting it.

6-Propyl-2-thiouracil

51-52-5sc-214383
sc-214383A
sc-214383B
sc-214383C
10 g
25 g
100 g
1 kg
$37.00
$56.00
$224.00
$1997.00
(0)

Propylthiouracil, similar to methimazole, inhibits thyroid peroxidase, leading to decreased thyroid hormone production. Since μ-crystallin is a thyroid hormone-binding protein, lower levels of thyroid hormone would result in reduced functional activity of μ-crystallin.

Quercetin

117-39-5sc-206089
sc-206089A
sc-206089E
sc-206089C
sc-206089D
sc-206089B
100 mg
500 mg
100 g
250 g
1 kg
25 g
$11.00
$17.00
$110.00
$250.00
$936.00
$50.00
33
(2)

Quercetin can inhibit the binding of triiodothyronine (T3) to μ-crystallin by competitive inhibition at the hormone binding site, leading to functional inhibition of μ-crystallin's activity as a T3-binding protein.

Kaempferol

520-18-3sc-202679
sc-202679A
sc-202679B
25 mg
100 mg
1 g
$99.00
$216.00
$510.00
11
(1)

Kaempferol interacts with the thyroid hormone receptor site on μ-crystallin, potentially inhibiting the binding of T3 and thus functionally inhibiting μ-crystallin's activity as a T3-binding protein.

Myricetin

529-44-2sc-203147
sc-203147A
sc-203147B
sc-203147C
sc-203147D
25 mg
100 mg
1 g
25 g
100 g
$97.00
$188.00
$260.00
$510.00
$1022.00
3
(1)

Myricetin can occupy the T3 binding site on μ-crystallin, inhibiting the protein's ability to bind thyroid hormones which are essential for its function in metabolic regulation, resulting in functional inhibition.

Genistein

446-72-0sc-3515
sc-3515A
sc-3515B
sc-3515C
sc-3515D
sc-3515E
sc-3515F
100 mg
500 mg
1 g
5 g
10 g
25 g
100 g
$45.00
$164.00
$200.00
$402.00
$575.00
$981.00
$2031.00
46
(1)

Genistein, by binding to the thyroid hormone receptor, can inhibit the ability for thyroid hormones to interact with μ-crystallin, which is necessary for its function, thus resulting in the functional inhibition of μ-crystallin.

Bisphenol A

80-05-7sc-391751
sc-391751A
100 mg
10 g
$300.00
$490.00
5
(0)

Bisphenol A can bind to thyroid hormone receptor, potentially inhibiting the thyroid hormone interaction with μ-crystallin. Since the activity of μ-crystallin is dependent on thyroid hormone binding, this would result in functional inhibition of the protein.

Raloxifene

84449-90-1sc-476458
1 g
$802.00
3
(0)

Raloxifene acts as a selective estrogen receptor modulator and can interfere with the hormone binding to its receptor. Since estrogen receptors can regulate the expression of enzymes involved in thyroid hormone synthesis, this could lead to decreased thyroid hormone levels, which are necessary for μ-crystallin activity, thus functionally inhibiting the protein.

Tamoxifen

10540-29-1sc-208414
2.5 g
$272.00
18
(2)

Tamoxifen, another selective estrogen receptor modulator, has a similar effect to raloxifene, where it could lead to reduced thyroid hormone synthesis and availability. Lower thyroid hormone levels would inhibit μ-crystallin activity since it binds these hormones for its function.