7-Hydroxymethotrexate is a major metabolite of Methotrexate (MTX; HY-14519). Methotrexate, an antimetabolite and antifolate agent, inhibits the enzyme dihydrofolate reductase, thereby preventing the conversion of folic acid into tetrahydrofolate, and inhibiting DNA synthesis^[1][2].

7-Hydroxymethotrexate (7-OHMTX) has the affinity of DHFR markedly lower (>100-fold) than for Methotrexate (MTX) ^[1].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

7-Hydroxymethotrexate (4 mg/kg; IV) has a terminal half-life of 97.2 min and a total clearance value of 9.6 mL/min•mg^[1].

Shanghai Jinpan Biotech Co Ltd has not independently confirmed the accuracy of these methods. They are for reference only.

470.44

C₂₀H₂₂N₈O₆

5939-37-7

7-羟基甲氨蝶呤

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. L Fahrig, et al. Pharmacokinetics of methotrexate (MTX) and 7-hydroxymethotrexate (7-OH-MTX) in rats and evidence for the metabolism of MTX to 7-OH-MTX. Cancer Chemother Pharmacol. 1989;23(3):156-60.

  [2]. Ping Guo, et al. Determination of methotrexate and its major metabolite 7-hydroxymethotrexate in mouse plasma and brain tissue by liquid chromatography-tandem mass spectrometry. J Pharm Biomed Anal. 2007 Apr 11;43(5):1789-95.