t β4

T4-ATA S-isomer, the active form of the thyroid hormone, represents the S-isomer of T4-ATA.

T4 RNA ligase为一RNA连接酶，催化单链DNA分子的连接作用。该酶在酶促低核糖核苷酸合成及RNA 3'端标记过程中应用。

T4 UvsX Recombinase 促进双链DNA模板上DNA复制的启动，通过催化模板DNA与同源单链DNA引物间的突触形成。此酶显著增强了T4 DNA聚合酶全酶在线性单链DNA模板上进行的回跳（发夹引物）DNA合成反应。

Dextran T4 (MW 4,000)是一种平均分子量为4000的脱水葡萄糖聚合物。该化合物具有优良的生物降解性和生物相容性，适用于食品、药品、化妆品以及研究领域。

T4-BSA 是一种由 T4 和 牛血清白蛋白 (BSA) 形成的抗原-佐剂偶联物。此缀合能够提高疫苗模型中抗原特异性抗体的生成。缀合过程不影响蛋白质的折叠或主要表位的结构，并且有效促进交叉呈递及抗原特异性 T 细胞的产生。

T4 OVA 是由甲状腺素 T4 (thyroxine T4) 和鸡卵白蛋白结合形成的复合物。T4 OVA 作为一种改良肽，可用于激活 OT-I CD8+ T 细胞。

Dextrothyroxine sodium is the dextrorotary isomer of thyroxine.

L-Thyroxine sodium xhydrate是一种合成的甲状腺激素，用于治疗甲状腺功能减退症。

XUN49524 also known as Vezf1-IN-T4, is an inhibitor of the pro-angiogenic activity of the zinc finger transcription factor Vezf1. XUN49524 was first reported in Molecules (2018), 23(7), 1615 1-1615 15 . This product has no formal name at the moment. For the convenience of communication, a temporal code name was therefore proposed according to MedKoo Chemical Nomenclature (see web page: https: www.medkoo.com page naming).

RORγt agonist 4 (compound 14)表现为高效的RORγt选择性激动剂。该化合物显著增强了代谢稳定性，并在小鼠B16F10黑色素瘤和LLC肺腺癌肿瘤模型中展示了改善效果。

Anti-human CD4 抗体同型对照亚型是Mouse IgG1, κ。

(T-4)-Copper(1+), bis[2,9-bis(4-methoxyphenyl)-1,10-phenanthroline-κN1,κN10]-, chloride 一种在生化反应中使用的试剂。

L-Thyroxine sodium (LT4 sodium) 是一种合成的甲状腺激素，用于研究甲状腺功能减退症。DIO 酶能够将Levothyroxine 转化成具有生物活性的三碘甲状腺氨酸 (T3)。

L-Thyroxine (NSC 36397) 是一种合成的甲状腺激素，用于甲状腺功能减退症的研究。在 DIO 酶作用下，L-Thyroxine (NSC 36397) 转化成具有生物特性的三碘甲状腺氨酸(T3)。

Azido-PEG4-Amido-tri-(t-butoxycarbonylethoxymethyl)-methane, a PEG-derived PROTAC linker, is employed for PROTAC synthesis[1].

N-(Azido-PEG4)-N-bis(PEG4-t-butyl ester) is a polyethylene glycol (PEG)-based linker employed in the synthesis of proteolysis-targeting chimeras (PROTACs).

N-Methyl-N-(t-Boc)-PEG4-acid is a polyethylene glycol (PEG) derivative utilized as a PROTAC linker in the synthesis of PROTACs, which refers to proteolysis-targeting chimeras[1].

Tos-PEG4-t-butyl ester (Tos-PEG4-Boc) is a PROTAC linker characterized by its PEG composition. This compound plays a crucial role in the synthesis of a range of PROTACs, including BI-3663, a highly selective PTK2 FAK PROTAC. It employs cereblon ligands to target E3 ligases for the degradation of PTK2, exhibiting potent inhibitory activity with an IC50 of 18 nM[1].

Azido-PEG3-S-PEG4-t-butyl ester is a PEG-based PROTAC linker employed for PROTAC synthesis[1].

Biotin-PEG4-amino-t-Bu-DADPS-C3-alykne functions as a PEG-based linker for PROTAC synthesis[1].

Mal-PEG4-Lys(t-Boc)-NH-m-PEG24 is a polyethylene glycol (PEG)-based PROTAC linker, suitable for the synthesis of PROTACs[1].

N-Desthiobiotin-N-bis(PEG4-t-butyl ester) is a PEG-based linker compound employed for the synthesis of PROTACs, which are bifunctional molecules designed for targeted protein degradation[1].

t-Boc-Aminooxy-PEG4-NHS ester is a polyethylene glycol (PEG) derivative, functioning as a linker for PROTAC synthesis[1].

RORγt inhibitor 4 (Compound 9a) 是一种口服活性且能够穿透中枢神经系统的RORγt抑制剂，用于改善实验性自身免疫性脑脊髓炎。