Date published: 2026-4-1

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LDH-B Inhibitors

The chemical class of LDH-B inhibitors encompasses a diverse array of compounds that specifically target lactate dehydrogenase B (LDH-B), a key enzyme involved in cellular lactate metabolism. These inhibitors can be classified into direct and indirect categories based on their mechanisms of action. Direct inhibitors, such as Gossypol, Oxamate, FX11, Galloflavin, 3-bromopyruvate, and N-Hydroxyindole-2-carboxylate, exert their effects by directly interacting with LDH-B's active site or modifying its catalytic machinery. Gossypol, for instance, binds to the enzyme, disrupting lactate-to-pyruvate conversion. Oxamate competes with pyruvate for the enzyme's active site, interfering with its catalytic function. FX11, on the other hand, directly inhibits LDH-B, providing a specific tool for studying lactate metabolism.

Indirect inhibitors, represented by Sodium Citrate, Quercetin, Sodium Malate, EGCG, and Methylglyoxal, modulate LDH-B activity through alternative pathways. Sodium Citrate, acting indirectly, influences the cellular microenvironment by serving as a buffer, impacting LDH-B's pH sensitivity. Quercetin and EGCG, both polyphenols, indirectly inhibit LDH-B by affecting signaling pathways like PI3K/Akt/mTOR, providing insights into the intricate regulatory mechanisms governing lactate metabolism. Sodium Malate and Methylglyoxal, as indirect inhibitors, alter the cellular redox state and glycolytic processes, respectively, influencing LDH-B activity.

SEE ALSO...

Product NameCAS #Catalog #QUANTITYPriceCitationsRATING

Gossypol

303-45-7sc-200501
sc-200501A
25 mg
100 mg
$116.00
$230.00
12
(1)

Gossypol acts as a direct inhibitor of LDH-B by binding to its active site, disrupting the enzymatic activity. This compound interferes with the catalytic function of LDH-B, preventing the conversion of lactate to pyruvate.

Oxamic acid

471-47-6sc-250620
25 g
$148.00
(0)

Oxamic acid serves as a direct inhibitor of LDH-B by competitively inhibiting the binding of pyruvate to the enzyme's active site. This competitive inhibition impedes the conversion of lactate to pyruvate, effectively suppressing LDH-B activity.

2,3-Dihydroxy-6-methyl-7-(phenylmethyl)-4-propyl-1-naphthalenecarboxylic Acid

213971-34-7sc-498807
1 mg
$480.00
(0)

Also called FX11, this compound is a direct inhibitor of LDH-B, disrupting its enzymatic activity by interfering with the conversion of lactate to pyruvate. By specifically targeting LDH-B, FX11 provides a selective approach for modulating lactate metabolism.

Galloflavin

568-80-9sc-489548
10 mg
$380.00
(0)

Galloflavin acts as a direct inhibitor of LDH-B by disrupting its catalytic activity. This compound interferes with the conversion of lactate to pyruvate, providing a targeted approach to inhibit LDH-B function.

Sodium oxalate

62-76-0sc-203396
sc-203396A
100 g
500 g
$43.00
$139.00
5
(1)

Sodium oxalate serves as a direct inhibitor of LDH-B by competitively inhibiting the enzyme's active site, interfering with the conversion of lactate to pyruvate.

Citric Acid Trisodium Salt

68-04-2sc-214745
sc-214745A
sc-214745B
sc-214745C
100 g
500 g
1 kg
5 kg
$41.00
$61.00
$82.00
$321.00
(0)

Sodium citrate serves as an indirect inhibitor of LDH-B by influencing the cellular microenvironment. It acts as a buffer, maintaining a higher pH that can impact LDH-B activity. The altered pH conditions affect the enzymatic activity of LDH-B, providing an indirect approach to modulate lactate metabolism.

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 acts as an indirect inhibitor of LDH-B by modulating cellular signaling pathways. It affects the PI3K/Akt/mTOR pathway, which, in turn, influences LDH-B activity. The downstream effects on lactate metabolism make quercetin an indirect inhibitor with potential implications for cancer metabolism and other cellular processes.

(−)-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)

Epigallocatechin gallate (EGCG) acts as an indirect inhibitor of LDH-B by impacting cellular signaling pathways. It influences the PI3K/Akt/mTOR pathway, which, in turn, modulates LDH-B activity.

Methylglyoxal solution

78-98-8sc-250394
sc-250394A
sc-250394B
sc-250394C
sc-250394D
25 ml
100 ml
250 ml
500 ml
1 L
$146.00
$437.00
$478.00
$754.00
$1446.00
3
(3)

Methylglyoxal serves as an indirect inhibitor of LDH-B by influencing cellular glycolysis. It forms adducts with cellular proteins, including LDH-B, affecting its enzymatic activity. The modified protein structure hinders LDH-B activity, providing an indirect approach to modulate lactate metabolism.