determination

Trans-​2-​Hexenal (trans-2-Hexenal) 是α,β-不饱和羰基化合物，可保护植物免受有害物质的侵害。

D-Mannitol (Mannitol) 是与山梨醇相关的利尿剂和肾脏诊断辅助剂，具有较弱的肾脏血管扩张活性。

4-Methylumbelliferone (Hymecromone) 是透明质酸生物合成抑制剂，显示出抗肿瘤和抗转移活性。

Sodium creatine phosphate dibasic tetrahydrate (Creatine phosphate disodium salt tetrahydrate) 主要存在于脊椎动物的骨骼肌中，是测定肌酸激酶的底物，能够用于骨骼肌收缩过程中 ATP 的再生。

2-Hydroxy-6-methoxybenzoic acid (6-Methoxysalicylic acid) 可用于动物血浆中乙酸水杨酸及其主要代谢物水杨酸含量的测定，表现出较好的抗缓解疼痛活性。

Br-Mmc (4-Bromomethyl-7-methoxycoumarin) 常用于荧光标记，可测定含有羧基的化合物。它能够利用 TLC 或 HPLC 测定脂肪酸含量。

Bilirubin (Principal bile pigment) 是胆色素的一种，是血液中血红素的代谢产物。Bilirubin 具有抗诱变和抗氧化作用。Bilirubin 是临床上判定黄疸的重要依据，也是肝功能的重要指标。

Methyl brevifolincarboxylate (Brevifolincarboxylic acid methyl ester) is a potent influenza virus PB2 cap-binding inhibitor. Methyl brevifolincarboxylate exhibits inhibitory activity against influenza virus A/Puerto Rico/8/34 (H1N1) and A/Aichi/2/68 (H3N2) with IC50s of 27.16 μM and 33.41 μM. Anti-oxidant activity[1][2]. Methyl brevifolincarboxylate exhibits significant DPPH radical scavenging activity with an IC50 value of 8.9 μM. [1]. Wu QY, et al. Chromatographic fingerprint and the simultaneous determination of five bioactive components of geranium carolinianum L. water extract by high performance liquid chromatography. Int J Mol Sci. 2011;12(12):8740-8749. [2]. Fang SH, et al. Anti-oxidant and inflammatory mediator's growth inhibitory effects of compounds isolated from Phyllanthus urinaria. J Ethnopharmacol. 2008;116(2):333-340.

Estrone-3-Glucuronide sodium hydrate 是雌二醇的主要代谢产物，是加鉴别中国大鲵性别的一个生物指标。

Aquastatin A is a fungal metabolite originally isolated fromF. aquaeductuumthat has diverse biological activities.1It is active againstS. aureus(MIC = 32 μg/ml) and inhibits enoyl-acyl carrier protein reductase (Fabl; IC50= 3.2 μM) andS. aureusfatty acid synthesis (IC50= 3.5 μM).2Aquastatin A also inhibits the Na+/K+-ATPase and H+/K+-ATPase (IC50s = 7.1 and 6.2 μM, respectively), as well as protein tyrosine phosphatase 1B (PTP1B; IC50= 0.19 μM).1,3 1.Hamano, K., Kinoshita-Okami, M., Minagawa, K., et al.Aquastatin A, an inhibitor of mammalian adenosine triphosphatases from Fusarium aquaeductuum. Taxonomy, fermentation, isolation, structure determination and biological propertiesJ. Antibiot. (Tokyo)46(11)1648-1657(1993) 2.Kwon, Y.-J., Fang, Y., Xu, G.-H., et al.Aquastatin A, a new inhibitor of enoyl-acyl carrier protein reductase from Sporothrix sp. FN611Biol. Pharm. Bull.32(12)2061-2064(2009) 3.Seo, C., Soh, J.H., Oh, H., et al.Isolation of the protein tyrosine phosphatase 1B inhibitory metabolite from the marine-derived fungus Cosmospora sp. SF-5060Bioorg. Med. Chem. Lett.19(21)6095-6097(2009)

3-Methylhistamine dihydrochloride 是一种组胺的降解产物，与免疫反应有关，并在接种过疫苗的小鼠中表现出上调作用。

2-Amino-3-hydroxypyridine (Standard) 是 2-Amino-3-hydroxypyridine 的标准品，适用于定量分析、质量控制及生化实验等相关研究。2-Amino-3-hydroxypyridine 作为显色试剂用于分光光度法测定锇。

Progesterone (Standard)是 Progesterone 的分析参考标准品，用于定量测定、质量保证及生物化学实验研究。作为一种类固醇激素，Progesterone 在调控月经周期和维持妊娠中发挥关键作用，并常用于诱导黄褐斑的实验模型及内分泌调控相关研究。