singlet

Uric acid 是一种重要的抗氧化剂，能够清除氧自由基和活性氧（如单线态氧和过氧亚硝酸盐），抑制脂质过氧化，维持血压稳定，是嘌呤代谢的最终产物，常用于诱导高血压模型。

2,4,6-Trimethylphenol (Mesitol) 是一种与有机物 (3DOM*) 反应的探针化合物，可在水溶液中被单线态氧快速氧化。

Uric acid sodium 是一种强效且广泛认可的抗氧化剂，具有清除氧自由基的能力，有助于维持血压稳定并抵抗氧化应激。它能有效清除活性氧（ROS），如单线态氧和过氧亚硝酸盐，并抑制脂质过氧化。此外，尿酸钠还与痛风性关节炎的发病机制以及草酸钙结石的形成密切相关，并可用于诱导高血压模型。

YRN84347，即meso-Tetra (3,5-dimethoxyphenyl) porphine，是一种合成的卟啉产品和光敏剂。该化合物展示了较高的单线态氧产率，揭示了其在光动力治疗癌症及其他相关人类疾病中的潜在应用。

NFh-NMe-2 是一种光敏剂，能够与硝基还原酶 (nitroreductase) 结合，在肿瘤细胞中生成单线态氧，展现出细胞毒性并诱导细胞凋亡 (apoptosis)。在小鼠模型中，NFh-NMe-2 显示出抗肿瘤活性。

Parabanic acid is the oxidation product of uric acid by singlet oxygen.

Rostaporfin (also known as REM-001, tin ethyl etiopurpurin, Sn(IV) etiopurpurin, Purlytin, SnET2), is a synthetic purpurin with photosensitizing activity. Rostaporfin preferentially accumulates in tumor cells due to an increased rate of metabolism. Upon e

AMK is an active metabolite of the neurohormone melatonin .1,2,3,4It is formed from melatoninviathe metabolic intermediate AFMK that is then deformylated by catalase or formamidase.5,6AMK scavenges singlet oxygenin vitrowhen used at a concentration of 200 μM.1It inhibits the epinephrine- and arachidonic acid-induced production of prostaglandin E2and PGD2in ovine seminal vesicle microsomes in a concentration- and time-dependent manner, as well as LPS-induced increases in COX-2 levels in RAW 264.7 macrophages when used at a concentration of 500 μM.2,3AMK (20 mg kg) decreases MPTP-induced increases in lipid peroxidation in the cytosol and mitochondria from substantia nigra and striatum in a mouse model of MPTP-induced Parkinson’s disease.4 1.Schaefer, M., and Hardeland, R.The melatonin metabolite N1-acetyl-5-methoxykynuramine is a potent singlet oxygen scavengerJ. Pineal Res.46(1)49-52(2009) 2.Kelly, R.W., Amato, F., and Seamark, R.F.N-acetyl-5-methoxy kynurenamine, a brain metabolite of melatonin, is a potent inhibitor of prostaglandin biosynthesisBiochem. Biophys. Res. Commun.121(1)372-379(1984) 3.Mayo, J.C., Sainz, R.M., Tan, D.-X., et al.Anti-inflammatory actions of melatonin and its metabolites, N1-acetyl-N2-formyl-5-methoxykynuramine (AFMK) and N1-acetyl-5-methoxykynuramine (AMK), in macrophagesJ. Neuroimmunol.165(1-2)139-149(2005) 4.Tapias, V., Escames, G., López, L.C., et al.Melatonin and its brain metabolite N1-acetyl-5-methoxykynuramine prevent mitochondrial nitric oxide synthase induction in parkinsonian miceJ. Neurosci. Res.87(13)3002-3010(2009) 5.Tan, D.-X., Manchester, L.C., Reiter, R.J., et al.Melatonin directly scavenges hydrogen peroxide: A potentially new metabolic pathway of melatonin biotransformationFree Radic. Biol. Med.29(11)1177-1185(2000) 6.Hirata, F., Hayaishi, O., Tokuyama, T., et al.In vitro and in vivo formation of two new metabolites of melatoninJ. Biol. Chem.249(4)1311-1313(1974)

Transcrocetin (8,8'-Diapocarotenedioic Acid) 是来源于藏红花 (Crocus sativus L.) 的活性化合物，是一种能够透过血脑屏障的，高亲和力的NMDA 受体拮抗剂。

Benz-AP 是一种高效光敏剂，能产生单线态氧并与 hCES2 活性呈负相关。在 hCES2 低表达的癌细胞中，Benz-AP 表现出较高的光毒性。采用双光子激发(TPE)技术，Benz-AP 能够生成 ROS，有效杀死癌细胞和肿瘤球体。

4-Thiouracil is a photoactivatable probe designated for site-specific applications in detecting RNA structures and nucleic acid-nucleic acid contacts. Upon illumination with ultraviolet light exceeding 300 nm and in the presence of oxygen, it serves as an energy donor, facilitating the generation of singlet oxygen through triplet-triplet energy transfer. This process enables the highly reactive oxygen species to interact with 4-thiouracil, leading to the formation of uracil and uracil-6-sulfonate; the latter exhibits fluorescence around a wavelength of approximately 390 nm. Additionally, 4-Thiouracil functions as a substrate for T. gondii uracil phosphoribosyltransferase, allowing the synthesis of 4-thiouridine monophosphate for subsequent integration into RNA.

NFh-ALP 作为一种碱性磷酸酶 (ALP) 激活的光敏剂,其最大吸收波长为656 nm.在细胞内,NFh-ALP 通过 ALP 的作用被激活,并在808 nm的光激发下产生单线态氧1O2,从而有效杀死肿瘤细胞,主要是通过诱导细胞凋亡实现,并表现出良好的生物相容性.

Dehydroglyasperin D exhibits anticancer, anti-inflammatory, anti-obesity, antioxidant and anti-aldose reductase effects, it inhibits the proliferation of HT-29 human colorectal cancer cells through direct interaction with phosphatidylinositol 3-kinase; it also mediates suppression of both COX-2 expression and the MLK3 signalling pathway through direct binding and inhibition of MLK3. Dehydroglyasperin D shows strong ferric reducing activities and effectively scavenged DPPH, ABTS(+), and singlet oxygen radicals.

4-Allylcatechol (Hydroxychavicol) 是合成黄樟素的一种中间体。

Isoangustone A是一种天然产物，以atp竞争的方式抑制PI3K， MKK4和MKK7，抑制G1期调节蛋白表达，抑制Akt、GSK-3β和JNK1/2的磷酸化，抑制人类黑色素瘤细胞增殖和异种移植小鼠模型的肿瘤生长。

Pallidol (Pallidol A) 是一种可从红葡萄酒中提取的白藜芦醇二聚体，是一种选择性单线态氧淬灭剂，具有抗氧化和抗真菌活性。

5-Methoxysterigmatocystin 是一种具细胞毒性和遗传毒性的霉菌毒素。它对癌细胞 A549 和 HepG2 展现细胞毒性，IC50分别为 5.5 和 0.7 μM，并且会引发 DNA 损伤。5-Methoxysterigmatocystin 还是一种光敏剂，能够在可见光作用下生成单线态氧 (1O2)。