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Pyrimethamine
本产品不向个人销售,仅用作科学研究,不用于任何人体实验及非科研性质的动物实验。
Pyrimethamine图片
CAS NO:58-14-0
包装与价格:
包装价格(元)
10mM (in 1mL DMSO)电议
10mg电议
50mg电议

产品介绍
Pyrimethamine (Pirimecidan) 是一种有效的、具有口服活性的二氢叶酸还原酶 (DHFR) 抑制剂。
Cas No.58-14-0
别名乙胺嘧啶; Pirimecidan; Pirimetamin; RP 4753
化学名5-(4-chlorophenyl)-6-ethylpyrimidine-2,4-diamine
Canonical SMILESCCC1=C(C(=NC(=N1)N)N)C2=CC=C(C=C2)Cl
分子式C12H13ClN4
分子量248.71
溶解度≥ 10 mg/mL in DMSO with gentle warming, ≥ 5.23 mg/mL in EtOH with ultrasonic
储存条件Store at -20℃
General tipsFor obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.
Shipping ConditionEvaluation sample solution : ship with blue ice
All other available size: ship with RT , or blue ice upon request
产品描述

Pyrimethamine(RP4753) is a medication used for protozoal infections; interferes with tetrahydrofolic acid synthesis from folic acid by inhibiting the enzyme dihydrofolate reductase (DHFR).IC50 Value: 15.4 nM (Plasmodium falciparum) [1]Target: DHFR; antifolatein vitro: Three susceptibility levels (susceptible, intermediate, and resistant) were observed in the response of culture-adapted clones and strains to pyrimethamine (50% inhibitory concentration [IC50]) 2,000 nM) and cycloguanil (IC50 500 nM). Based on these susceptibility levels, 73 and 68 of 96 fresh clinical isolates were susceptible to pyrimethamine (mean IC50 15.4 nM) and cycloguanil (mean IC50 11.1 nM), respectively [1]. We tested pyrimethamine(previously reported to suppress SOD1 expression), several compounds currently in trials in human and murine ALS, and a set of 1040 FDA-approved compounds. In a PC12 cell-based assay, no compounds reduced SOD1 promoter activity without concomitant cytotoxicity. Additionally,pyrimethamine failed to repress levels of SOD1 protein in HeLa cells or homogenates of liver, spinal cord and brain of wild-type mice [3].in vivo: (131)I-Pyrimethamine (specific activity: 7.08 MBq/ mol) was injected intravenously into the tail vein of the control and infected rats. Static whole body images of the rats were acquired under the gamma camera at 5 min, 45 min, 2 h, 6 h, and 24 h following the intravenous administration of the radioactivity (3.7 MBq/rat) [2]. The 10-day treatment with 10mg/kg/day of fluconazole combined with 40/1mg/kg/day sulfadiazine and pyrimethamine resulted in 93% survival of CF1 mice acutely infected with the highly virulent T. gondii RH strain, versus 36% of mice treated with just sulfadiazine and pyrimethamine [4].Toxicity: Sulfadoxine/pyrimethamine is well tolerated as treatment and when used as intermittent preventive treatment in pregnant African women. Sulfadoxine/pyrimethamine is no longer used as prophylaxis because it may cause toxic epidermal necrolysis and Stevens Johnson syndrome [5].

References:
[1]. Basco LK, et al. In vitro activity of pyrimethamine, cycloguanil, and other antimalarial drugs against African isolates and clones of Plasmodium falciparum. Am J Trop Med Hyg. 1994 Feb; 50(2):193-9.
[2]. Inceboz T, et al. Preparation of (131)I-Pyrimethamine and evaluation for scintigraphy of experimentally Toxoplasma gondii-infectedrats. J Drug Target. 2013 Feb;21(2):175-9.
[3]. Wright PD, et al. Screening for inhibitors of the SOD1 gene promoter: pyrimethamine does not reduce SOD1 levels in cell and animal models. Neurosci Lett. 2010 Oct 4;482(3):188-92.
[4]. Martins-Duarte ES, et al. Toxoplasma gondii: the effect of fluconazole combined with sulfadiazine and pyrimethamine against acute toxoplasmosis in murine model. Exp Parasitol. 2013 Mar;133(3):294-9.
[5]. Taylor WR, et al. Antimalarial drug toxicity: a review. Drug Saf. 2004;27(1):25-61.