Date published: 2026-2-23

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OCTL2 Inhibitors

OCTL2 Inhibitors represent an array of chemical compounds that influence the functional activity of OCTL2 through various mechanisms related to its role in carnitine transport and fatty acid metabolism. Quercetin directly competes with carnitine, the substrate of OCTL2, thus diminishing its transport across cell membranes. Verapamil indirectly reduces OCTL2 activity by modulating intracellular calcium levels, which are known to regulate the transporter's activity, leading to a lessened transport function. Similarly, Meldonium and L-Carnitine decrease OCTL2 activity by reducing the availability of carnitine, either through inhibition of synthesis or by substrate inhibition. 1,1-Dimethylbiguanide, Hydrochloride and Pyruvate influence OCTL2 indirectly; 1,1-Dimethylbiguanide, Hydrochloride by altering cellular energy status and Pyruvate by providing an alternative energy source, thereby reducing the need for the carnitine transport that OCTL2 mediates. Furthermore, Malonyl-CoA, Trimetazidine, Nicotinic Acid, Etomoxir, Ranolazine, and Hydroxycitrate all contribute to the inhibition of OCTL2 by decreasing the cellular requirement for carnitine transport into mitochondria for fatty acid oxidation. Malonyl-CoA and Etomoxir target carnitine palmitoyltransferase 1, a key enzyme in fatty acid oxidation, while Trimetazidine and Ranolazine inhibit fatty acid beta-oxidationdirectly. Nicotinic Acid reduces the availability of free fatty acids for oxidation, and Hydroxycitrate shifts cellular metabolism away from fatty acid synthesis and oxidation, both leading to reduced necessity for OCTL2's carnitine transport function. Collectively, these inhibitors collectively achieve a diminished OCTL2 activity by targeting the transporter's substrate availability, competitive inhibition, energetic shifts within the cell, and the broader metabolic demand for carnitine-dependent processes.
Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

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 competitively inhibits the transport function of OCTL2 by binding to its substrate recognition sites. This results in a diminished uptake of carnitine, a substrate of OCTL2, thereby inhibiting its transport function across the cell membrane.

Verapamil

52-53-9sc-507373
1 g
$374.00
(0)

Verapamil acts as a calcium channel blocker and indirectly diminishes OCTL2 activity by modulating intracellular calcium levels. Elevated intracellular calcium is known to increase the transport function of OCTL2; hence, Verapamil's action leads to reduced OCTL2-mediated transport.

Meldonium

76144-81-5sc-207887
100 mg
$455.00
1
(1)

Meldonium inhibits gamma-butyrobetaine hydroxylase, leading to decreased synthesis of carnitine. As carnitine is a substrate for OCTL2, reduced availability leads to decreased OCTL2 transport activity.

L-Carnitine

541-15-1sc-205727
sc-205727A
sc-205727B
sc-205727C
1 g
5 g
100 g
250 g
$23.00
$34.00
$79.00
$179.00
3
(1)

High concentrations of L-Carnitine can inhibit OCTL2 by substrate inhibition, where the excess substrate itself diminishes the transport efficiency of the protein.

1,1-Dimethylbiguanide, Hydrochloride

1115-70-4sc-202000F
sc-202000A
sc-202000B
sc-202000C
sc-202000D
sc-202000E
sc-202000
10 mg
5 g
10 g
50 g
100 g
250 g
1 g
$20.00
$43.00
$63.00
$156.00
$260.00
$510.00
$31.00
37
(1)

1,1-Dimethylbiguanide, Hydrochloride is known to inhibit mitochondrial complex I, which can lead to altered cellular energy status and indirectly impact OCTL2 function by decreasing the demand for carnitine transport necessary for fatty acid oxidation.

Pyruvic acid

127-17-3sc-208191
sc-208191A
25 g
100 g
$41.00
$96.00
(0)

Pyruvate, by serving as an alternative energy source and enhancing glycolysis, reduces the requirement for fatty acid oxidation and thus can indirectly lead to a decrease in OCTL2 activity as the cellular demand for carnitine transport diminishes.

Trimetazidine Dihydrochloride

13171-25-0sc-220334
10 mg
$213.00
(1)

Trimetazidine inhibits fatty acid beta-oxidation, which reduces the requirement for carnitine and, by extension, the transport function of OCTL2.

Nicotinic Acid

59-67-6sc-205768
sc-205768A
250 g
500 g
$62.00
$124.00
1
(1)

Nicotinic acid can inhibit lipolysis, leading to reduced levels of free fatty acids for oxidation. This leads to a decreased need for carnitine transport by OCTL2, as fatty acid oxidation is diminished.

(+)-Etomoxir sodium salt

828934-41-4sc-215009
sc-215009A
5 mg
25 mg
$151.00
$506.00
3
(2)

Etomoxir inhibits carnitine palmitoyltransferase 1 (CPT1), thereby reducing fatty acid entry into mitochondria for oxidation. This results in a decreased functional need for OCTL2-mediated carnitine transport.

Ranolazine

95635-55-5sc-212769
1 g
$109.00
3
(1)

Ranolazine inhibits fatty acid beta-oxidation, consequently decreasing the requirement for carnitine transport and indirectly leading to reduced OCTL2 activity.