Dihydrofolate reductase (DHFR) Inhibitor

Methotrexate (Amethopterin; CL14377; WR19039) is an orally active antifolate (Antifolate). Methotrexate inhibits dihydrofolate reductase (DHFR), blocks tetrahydrofolate production, suppresses purine/pyrimidine synthesis and transmethylation, and causes intracellular accumulation of AICAR. Methotrexate promotes extracellular adenosine release, regulates the cytokine network, and inhibits the alarmin function of HMGB1. Methotrexate induces apoptosis and cytotoxicity, upregulates the expression of iNOS and COX-2, suppresses hippocampal neurogenesis, and induces pulmonary fibrosis. Methotrexate is used in the research of various immune and inflammation-related diseases such as arthritis, psoriasis, systemic lupus erythematosus, as well as pulmonary fibrosis and breast cancer.

Methotrexate disodium (Amethopterin disodium; CL14377 disodium; WR19039 disodium) is an orally active antifolate (Antifolate). Methotrexate disodium inhibits dihydrofolate reductase (DHFR), blocks tetrahydrofolate production, suppresses purine/pyrimidine synthesis and transmethylation, and causes intracellular accumulation of AICAR. Methotrexate disodium promotes extracellular adenosine release, regulates the cytokine network, and inhibits the alarmin function of HMGB1. Methotrexate disodium induces apoptosis and cytotoxicity, upregulates the expression of iNOS and COX-2, suppresses hippocampal neurogenesis, and induces pulmonary fibrosis. Methotrexate disodium is used in the research of various immune and inflammation-related diseases such as arthritis, psoriasis, systemic lupus erythematosus, as well as pulmonary fibrosis and breast cancer.

Trimetrexate (CI-898) is an antibiotic, also a potent and orally active dihydrofolate reductase (DHFR) inhibitor, reducing the production of DNA and RNA precursors and leading to cell death, with IC₅₀ values of 4.74 nM and 1.35 nM for human DHFR and Toxoplasma gondii DHFR. Trimetrexate can also inhibit the growth of various cancer cells. Trimetrexate can be used for researching Pneumocystis carinii pneumonia (PCP) and cancer.

WR99210 is an orally active and low-toxicity dihydrofolate reductase (DHFR) inhibitor (IC₅₀<0.075 nM). WR99210 shows good antiparasitic activity and is effective against P. falciparum and P. falciparum strains (including Pyrimethamine< (HY-18062)-resistant P. falciparum strains) as well as T. gondii.

Methotrexate hydrate (Amethopterin hydrate; CL14377 hydrate; WR19039 hydrate) is an orally active antifolate (Antifolate). Methotrexate hydrate inhibits dihydrofolate reductase (DHFR), blocks tetrahydrofolate production, suppresses purine/pyrimidine synthesis and transmethylation, and causes intracellular accumulation of AICAR. Methotrexate hydrate promotes extracellular adenosine release, regulates the cytokine network, and inhibits the alarmin function of HMGB1. Methotrexate hydrate induces apoptosis and cytotoxicity, upregulates the expression of iNOS and COX-2, suppresses hippocampal neurogenesis, and induces pulmonary fibrosis. Methotrexate hydrate is used in the research of various immune and inflammation-related diseases such as arthritis, psoriasis, systemic lupus erythematosus, as well as pulmonary fibrosis and breast cancer.

Succinylsulfathiazole (Succinylsulphathiazole) is a long-acting sulfonamide antibiotic with localized gut-specific antibacterial activity and is orally active. Succinylsulfathiazole inhibits bacterial folate synthesis, reduces coliform counts, suppresses intestinal bacterial growth and vitamin biosynthesis, and depletes gut folate-producing bacteria. Succinylsulfathiazole modulates hepatic mTOR signaling, diminishes cecal fermentation, decreases hepatic folate levels and total folate excretion, elevates nitrogen excretion and reduces the fermentability of certain dietary fibers. Succinylsulfathiazole induces folate deficiency and triggers biotin- and folate-related nutritional deficiency symptoms in rats and C57BL/6 mice.

10-Formylfolic acid is a potent inhibitor of dihydrofolate reductase, with an IC₅₀ of 80 nM against the rat enzyme. 10-Formylfolic acid also acts as an orally active folate source and a growth factor for specific bacteria. 10-Formylfolic acid supports growth and increases plasma folate levels; its absorption and metabolism patterns are similar to those of folic acid, but its liver retention is slightly higher. It exhibits high folate activity in microbial assays, serves as a growth factor for Enterococcus faecalis and Lactobacillus casei, aids folate nutrient supply, and may exert cell regulatory functions.

5-Monobutyl methotrexate (NSC 305986; γ-MBMTX) is a dihydrofolate reductase (DHFR) inhibitor and esterase substrate. 5-Monobutyl methotrexate is hydrolyzed by esterases to produce methotrexate. In rhesus monkeys, 5-Monobutyl methotrexate clears more slowly from cerebrospinal fluid than from serum, and its serum protein binding rate exceeds 99%. At the same dose rate, 5-Monobutyl methotrexate achieves cerebrospinal fluid concentrations comparable to those of Methotrexate (HY-14519), and exhibits activity against Methotrexate-resistant cells (with transport defects) that is comparable to that against sensitive parental cells. 5-Monobutyl methotrexate can be used in studies related to Methotrexate-resistant tumors.

Methotrexate metabolite (DAMPA) is an active metabolite of Methotrexate. Methotrexate is a Folic acid (HY-16637) antagonist, widely used as an immunosuppressant. Methotrexate metabolite is an antimalarial agent that inhibits parasite growth under physiological folic acid conditions, with IC₅₀ values of 446 nM and 812 nM against folic acid-sensitive strains and highly resistant strains, respectively. Methotrexate metabolite exhibits pharmacokinetic characteristics of rapid clearance and extensive metabolism, with a mean clearance rate of 1.9 l/kg/h and a mean terminal half-life of 51 minutes. Methotrexate metabolite is promising for research in the field of inflammation.

Methotrexate (Standard) (Amethopterin (Standard); CL14377 (Standard); WR19039 (Standard)) is the analytical standard of Methotrexate (HY-14519). This product is intended for research and analytical applications. Methotrexate (Amethopterin; CL14377; WR19039) is an orally active antifolate (Antifolate). Methotrexate inhibits dihydrofolate reductase (DHFR), blocks tetrahydrofolate production, suppresses purine/pyrimidine synthesis and transmethylation, and causes intracellular accumulation of AICAR. Methotrexate promotes extracellular adenosine release, regulates the cytokine network, and inhibits the alarmin function of HMGB1. Methotrexate induces apoptosis and cytotoxicity, upregulates the expression of iNOS and COX-2, suppresses hippocampal neurogenesis, and induces pulmonary fibrosis. Methotrexate is used in the research of various immune and inflammation-related diseases such as arthritis, psoriasis, systemic lupus erythematosus, as well as pulmonary fibrosis and breast cancer.

4 '-DTMP is a DHFR inhibitor with Ki of 5.1 nM (DHFR^WT) and 34.3 nM (DHFR^L28R), respectively. 4 '-DTMP carries a polar modification that induces additional local interactions with the enzyme. In particular, the hairpin structure on the M20 ring is related to the internal communication of the DHFR. 4 '-DTMP has potential inhibition of E.coli.

WR99210 hydrochloride is an orally active and low-toxicity dihydrofolate reductase (DHFR) inhibitor (IC₅₀<0.075 nM). WR99210 hydrochloride shows good antiparasitic activity and is effective against P. falciparum and P. falciparum strains as well as T. gondii.

Methotrexate-d₃ is the deuterated-labeled Methotrexate (HY-14519). Methotrexate (Amethopterin; CL14377; WR19039) is an orally active antifolate (Antifolate). Methotrexate inhibits dihydrofolate reductase (DHFR), blocks tetrahydrofolate production, suppresses purine/pyrimidine synthesis and transmethylation, and causes intracellular accumulation of AICAR. Methotrexate promotes extracellular adenosine release, regulates the cytokine network, and inhibits the alarmin function of HMGB1. Methotrexate induces apoptosis and cytotoxicity, upregulates the expression of iNOS and COX-2, suppresses hippocampal neurogenesis, and induces pulmonary fibrosis. Methotrexate is used in the research of various immune and inflammation-related diseases such as arthritis, psoriasis, systemic lupus erythematosus, as well as pulmonary fibrosis and breast cancer.

Piritrexim (BW 301U) is a potent dihydrofolate reductase (DHFR) inhibitor against Pneumocystis carinii and Toxoplasma gondii, with IC₅₀ values of 0.038 and 0.011 μM, respectively. Piritrexim can be used for acquired immune deficiency syndrome (AIDS) research. Piritrexim also is an anticancer agent.

Fluorofolin is a dihydrofolate reductase (DHFR) inhibitor with an IC₅₀ of 2.5 nM. Fluorofolin exhibits significant activity against P. aeruginosa.

DHFR-IN-4 is a potent dihydrofolate reductase (DHFR) inhibitor with an IC₅₀ value of 123 nM. DHFR-IN-4 also has inhibitory activity against EGFR and HER2 with IC₅₀s of 246 nM and 357 nM, respectively. DHFR-IN-4 has remarkable broad spectrum cytotoxic potency against cancer cells.

Phomarin is an inhibitor for dihydrofolate reductase (DHFR). Phomarin exhibits activity against Plasmodium parasites and fungi including Mycrobotryum violaceum and Botrytis cinerea. Phomarin can be used for the research of malaria and fungal infections.

DHFR-IN-5 is a potent and orally active dihydrofolate reductase (DHFR) inhibitor with a K_i value of 0.54 nM for quadruple mutant Plasmodium falciparum DHFR. DHFR-IN-5 shows anti-malaria activity.

Baquiloprim is an orally active Antibiotic and selective inhibitor of Bacterial Dihydrofolate reductase (DHFR), with an IC₅₀ of 19 nM against E. coli and an IC₅₀ of 190 μM against rat liver dihydrofolate reductase. Baquiloprim is a bacteriostatic broad-spectrum antibacterial agent that acts against Gram-negative and Gram-positive bacteria. Baquiloprim inhibits glucuronidation in cultured hepatocytes. Baquiloprim can be used in research related to Pasteurella haemolytica infection, bacterial infection, Escherichia coli diarrhea, bacterial infection in pigs, and pneumonic pasteurellosis.

Methotrexate-d₃ diammonium is the deuterated-labeled Methotrexate (HY-14519). Methotrexate (Amethopterin; CL14377; WR19039) is an orally active antifolate (Antifolate). Methotrexate inhibits dihydrofolate reductase (DHFR), blocks tetrahydrofolate production, suppresses purine/pyrimidine synthesis and transmethylation, and causes intracellular accumulation of AICAR. Methotrexate promotes extracellular adenosine release, regulates the cytokine network, and inhibits the alarmin function of HMGB1. Methotrexate induces apoptosis and cytotoxicity, upregulates the expression of iNOS and COX-2, suppresses hippocampal neurogenesis, and induces pulmonary fibrosis. Methotrexate is used in the research of various immune and inflammation-related diseases such as arthritis, psoriasis, systemic lupus erythematosus, as well as pulmonary fibrosis and breast cancer.