b-estradiol

Estradiol (E2) 是一种天然的类固醇性激素，对于女性生育能力和第二性征的维持至关重要。Estradiol 通过雌激素受体 β (ERβ) 上调 IL-6 表达。

Estradiol (β-Estradiol) hemihydrate 是主要女性性激素的类固醇激素。它能上调人类子宫内膜干细胞 (hEnSCs) 的神经标志物表达，促进神经分化，适用于癌症、神经退行性疾病和神经组织工程研究。

β-Estradiol 17-acetate (1,3,5(10)-Estratriene-3,17β-diol 17-acetate) 是一种雌二醇代谢物。

Estradiol dipropionate (17-Beta-Estradiol-3,17-Dipropionate) 是雌激素-孕激素的组合物，可用作雌激素 (estrogen) 孕激素 (progesterone) 激动剂。

beta-Estradiol 17-hemisuccinate 选择性染色富含雌激素受体 (ER) 的细胞。

β-Estradiol-6-one 6-(O-carboxymethyloxime) is an alkyl chain-based PROTAC linker utilized for PROTAC synthesis[1].

Palazestrant (OP-1250) 是一种可口服且具有高效性的雌激素受体拮抗剂和选择性ER降解剂，具有抗肿瘤活性。Palazestrant 抑制 17b-estradiol (E2)，抑制 MCF7 和 CAMA-1 细胞增殖，可用于研究乳腺癌。

β-Estradiol-6-CMO-PEG3-biotin serves as a cleavable 3-unit PEG ADC linker for the synthesis of antibody-drug conjugates (ADCs)[1].

Estradiol 17-(β-D-glucuronide) (E217G) is an estrogen metabolite formed in the liver and subsequently excreted in bile.1It acts as a substrate of the multidrug resistance protein 2 (MRP2; Km= 75 μM), and through MRP2-mediated transport, functions as a cholestatic agent, decreasing bile flow.1,2In addition to binding to the MRP2 transport site, E217G has been shown to bind to an allosteric site that through positive cooperativity activates its own transportviaMRP2 and the transport of other MRP2 substrates, including the non-cholestatic estrogen metabolite, estradiol 3-(β-D-glucuronide) .2,3E217G has also been reported to be transported by MDR1, MRP1, MRP3, MRP4, MRP7, ABCG2 (a breast cancer resistance protein transporter), and the rat organic anion-transporting polypeptides 1-4.2 1.Loe, D.W., Almquist, K.C., Cole, S.P., et al.ATP-dependent 17β-estradiol 17-(β-D-glucuronide) transport by multidrug resistance protein (MRP). Inhibition by cholestatic steroidsThe Journal of Biological Chemisty271(16)9683-9689(1996) 2.Gerk, P.M., Li, W., and Vore, M.Estradiol 3-glucuronide is transported by the multidrug resistance-associated protein 2 but does not activate the allosteric site bound by estradiol 17-glucuronideDrug Metabolism and Disposition32(10)1139-1145(2004) 3.Gerk, P.M., Li, W., Megaraj, W., et al.Human multidrug resistance protein 2 transports the therapeutic bile salt tauroursodeoxycholateJournal of Pharmacology and Experimental Therapeutics320(2)893-899(2007)

17-Epiestriol is a metabolite of estrone .1It is formed from estroneviaa 16α-hydroxy estrone intermediate by reduction of the C-17 ketone. 17-Epiestriol binds to estrogen receptor α (ERα) and ERβ with relative binding affinities of 29 and 80 compared with 17β-estradiol .2 1.Brinton, L.A., Trabert, B., Anderson, G.L., et al.Serum estrogens and estrogen metabolites and endometrial cancer risk among postmenopausal womenCancer Epidemiol. Biomarkers Prev.25(7)1081-1089(2016) 2.Kuiper, G.G.J.M., Lemmen, J.G., Carlsson, B., et al.Interaction of estrogenic chemicals and phytoestrogens with estrogen receptor βEndocrinology139(10)4252-4263(1998)

Ethynyl estradiol 3-β-D-glucuronide is a metabolite of ethynyl estradiol that can be detected in urine.1,2It is used as a marker of estrogen contamination in fresh and saltwater.2 1.Hadd, H.E., Slikker, W., Jr., and Helton, E.D.The synthesis and characterization of the glucopyranosiduronic acids of 17a-ethynylestradiol-17bJ. Steroid Biochem.13(9)1107-1114(1980) 2.Griffith, D.R., Soule, M.C.K., Eglinton, T.I., et al.Steroidal estrogen sources in a sewage-impacted coastal oceanEnviron. Sci.: Processes Impacts18(8)931-1106(2016)

Stephacidin B is a fungal metabolite that has been found inA. ochraceus.1Dimeric stephacidin B is rapidly converted to a monomer, avrainvillamide ,in vitro.2Stephacidin B is cytotoxic to a variety of cancer cells, including testosterone-independent PC3 and -sensitive LNCaP prostate cancer cells (IC50s = 0.37 and 0.06 μM, respectively) and estradiol-independent SK-BR-3 and -sensitive MCF-7 breast cancer cells (IC50s = 0.32 and 0.27 μM, respectively).1It induces apoptosis in HepG2 and Huh7 hepatocellular carcinoma cells when used at a concentration of 4 μM.3 1.Qian-Cutrone, J., Huang, S., Shu, Y.-Z., et al.Stephacidin A and B: Two structurally novel, selective inhibitors of the testosterone-dependent prostate LNCaP cellsJ. Am. Chem. Soc.124(49)14556-14557(2002) 2.Wulff, J.E., Herzon, S.B., Siegrist, R., et al.Evidence for the rapid conversion of stephacidin B into the electrophilic monomer avrainvillamide in cell cultureJ. Am. Chem. Soc.129(16)4898-4899(2007) 3.Hu, L., Zhang, T., Liu, D., et al.Notoamide-type alkaloid induced apoptosis and autophagy via a P38/JNK signaling pathway in hepatocellular carcinoma cellsRSC Adv.9(34)19855-19868(2019)

Ethynyl estradiol 3-b-D-glucuronide是一种用于糖生物学研究的生化试剂。糖生物学研究糖类的结构、合成、生物学功能及其进化。该领域探讨碳水化合物化学、聚糖合成与降解酶学、蛋白质与聚糖的识别作用以及聚糖在生物系统中的角色，并与基础研究、生物医学及生物技术密切相关。