Oseltamivir acid
Cat.No:IO0350 Solarbio
CAS:187227-45-8
Storage:Powder:-20℃,2 years;Insolvent(Mother Liquid):-20℃,6 months;-80℃,1 year
Purity:≥98%
Appearance:White to off-white Solid
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Storage:Powder:-20℃,2 years;Insolvent(Mother Liquid):-20℃,6 months;-80℃,1 year
Purity:≥98%
Appearance:White to off-white Solid
Qty:
Size:
CAS | 187227-45-8 |
Name | Oseltamivir acid |
Molecular Formula | C14H24N2O4 |
Molecular Weight | 284.35 |
Solubility | Soluble in Water/DMSO |
Purity | ≥98% |
Appearance | White to off-white Solid |
Storage | Powder:-20℃,2 years;Insolvent(Mother Liquid):-20℃,6 months;-80℃,1 year |
MDL | MFCD00953940 |
SMILES | O=C(O)C1=C[C@H]([C@@H]([C@H](C1)N)NC(C)=O)OC(CC)CC |
Target Point | Influenza Virus |
Passage | Anti-infection |
Background | Oseltamivir acid is an inhibitor of influenza virus neuraminidase. |
Biological Activity | Oseltamivir acid,是GS 4071的乙酯前药,是流感病毒神经氨酸酶的抑制剂,IC50 约为100 nM。[1-4] |
In Vitro | Oseltamivir acid在体外和体内抑制病毒复制。流感B和A/H1N1病毒似乎对Oseltamivir acid敏感(平均B IC50值:13 nM;平均H1N1 IC50值:1.34 nM),而A/H1N2和A/H3N2病毒对Oseltamivir acid更敏感(平均H3N2 IC50值:0.67 nM;平均H1N2 IC50值:0.9 nM)[1]。在使用甲型流感病毒的神经氨酸酶抑制试验中,RWJ-270201的中位数50%抑制浓度(IC50)(约0.34 nM)与Oseltamivir羧酸盐(0.45 nM)相当,对于乙型流感病毒分离株,RWJ-270201的IC50(1.36 nM)与扎那米韦(2.7 nM)相当,低于Oseltamivir acid羧酸盐(8.5 nM)[2]。 |
In Vivo | Oseltamivir acid(0.1,1或10mg/kg /天,通过口服强饲法每日两次)对越南/ 1203/04(VN1203/04)病毒产生剂量依赖性抗病毒作用。 10mg/kg /天的5天方案可保护50%的小鼠;该治疗组中的死亡被延迟并且表明在治疗完成后残留病毒的复制。 8天方案改善了Oseltamivir acid的疗效,1和10 mg/kg /天的剂量显著降低了器官中的病毒滴度,并分别提供了60%和80%的存活率[3]。在药代动力学研究中,口服给予1,000mg/kgOseltamivir acid后,Oseltamivir acid给药后2小时达到峰值血浆浓度,对于Oseltamivir acid羧酸盐(OC)则达到8小时。在整个采样间隔期间,大鼠暴露于奥司他韦,并且与Oseltamivir相比,暴露于OC的速率高约2.7倍。在CSF中,Oseltamivir acid在给药后2小时达到峰值浓度,对于OC则达到6小时。奥司他韦的CSF /血浆暴露比(AUC0-8h)为~0.07,OC为0.007。在灌注的脑样品中,Oseltamivir acid给药后8小时达到峰值浓度,OC达6小时。记录Oseltamivir acid的脑/血浆暴露比(AUC0-8h)为~0.12,OC为0.01。对于两种分析物,相应的CSF /脑暴露比率在约0.55和0.64之间。另一组以较低剂量单次口服Oseltamivir acid的动物产生了类似的结果[4]。 |
Animal Experiment | 小鼠[3]将雌性6周龄BALB / c小鼠用异氟烷麻醉,并用PBS中的50μL10倍连续稀释的VN1203 / 04病毒鼻内接种。在16天的观察期后计算小鼠致死剂量(MLD50)。Oseltamivir acid通过口服管饲法每天两次施用5或8天,给予10只小鼠的组,剂量为0.1,1和10mg / kg /天。对照(感染但未治疗)小鼠以相同的方案接受无菌PBS(安慰剂)。在第一剂Oseltamivir acid后4小时,用50μLPBS中的5 MLD50的VN1203 / 04病毒鼻内接种小鼠。观察24天的存活和体重变化。在接种后第3天,第6天和第9天测定小鼠器官中的病毒滴度。来自每个实验组和安慰剂组的三只小鼠被杀死,并且移除肺和脑。将器官均质化并悬浮在1mL PBS中。通过以2000g离心5分钟来清除细胞碎片。病毒检测限为0.75 log10 EID50。为了计算平均值,将病毒滴度<0.75 log10 EID50 / mL的样品指定为0.通过使用Reed和Muench的方法计算每个器官中的病毒滴度,并表示为平均log10 EID50 / mL± SE。大鼠[4]进行了几项研究,以表征Oseltamivir acid单次剂量推注(静脉注射[iv]和口服)后血浆,脑脊液(CSF)和Sprague-Dawley大鼠脑中Oseltamivir acid和OC的药代动力学。 OC(iv)。在静脉注射研究中,非禁食成年大鼠(每组测试物质两组35只动物)接受剂量为30 mg / kg体重的Oseltamivir acid或Oseltamivir acid羧酸盐(OC)与氯化钠水溶液(0.9%; pH 4.0))通过在20至30秒内缓慢注入尾静脉。在两项iv研究中,药代动力学取样在给药后5分钟和0.25,0.5,1,2,4和8小时(四或五只大鼠/时间点)进行。 |
Data Literature Source | [1]. Ferraris O,et al. Sensitivity of influenza viruses to zanamivir and oseltamivir: a study performed on viruses circulating in France prior to the introduction of neuraminidase inhibitors in clinical practice. Antiviral Res. 2005 Oct;68(1):43-8. [2]. Gubareva LV,et al. Comparison of the activities of zanamivir,oseltamivir,and RWJ-270201 against clinical isolates of influenza virus and neuraminidase inhibitor-resistant variants.Antimicrob Agents Chemother. 2001 Dec;45(12):3403-8. [3]. Yen HL,et al. Virulence may determine the necessary duration and dosage of oseltamivir treatment for highly pathogenic A/Vietnam/1203/04 influenza virus in mice. J Infect Dis. 2005 Aug 15;192(4):665-72. [4]. Hoffmann G,et al. Nonclinical pharmacokinetics of oseltamivir and oseltamivir carboxylate in the central nervous system. Antimicrob Agents Chemother. 2009 Nov;53(11):4753-61 |
Unit | Piece |
Specification | 5mg 10mg 50mg |
Oseltamivir acid是流感病毒神经氨酸酶的抑制剂。
Remark:These protocols are for reference only. Solarbio does not independently validate these methods.
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