Tipifarnib S enantiomer ((S)-(-)-R-115777) 是Tipifarnib 的 S 型对映体，它比 Tipifarnib 特性低。其中 Tipifarnib 是farnesyltransferase 高效特异性抑制剂，IC50=0.6 nM。

α-Glucosylrutin 是一种具备清除自由基活性的有效抗氧化剂。由于其在表皮生物利用度较高，常用于研究皮肤衰老。

1-Aminodecylidenebis-phosphonic acid, with its potent inhibitory effect on acid sphingomyelinase (IC50= 20 nM), shows selectivity by being less effective against neutral sphingomyelinase (IC50= >100 μM). Additionally, it entirely prevents dexamethasone-induced apoptosis in HepG2 cells.

PROTAC SGK3 degrader-1 (SGK3-PROTAC1) 是一种靶向 SGK3 且与 VH032 VHL 结合配体的 PROTAC 偶联物，可诱导内源性 SGK3 降解。PROTAC SGK3 degrader-1 可抑制GDC0941诱导的癌细胞增殖。

3-O-methyl-L-DOPA is a metabolite of L-DOPA , produced by the activity of catechol O-methyltransferase. 3-O-methyl-L-DOPA may have effects of its own or it may compete with the actions of L-DOPA.

Alfacalcidol (Etalpha) 是一种维生素 D3 衍生物，是非选择性的维生素 D 受体活化剂，有用于骨质疏松研究的潜力。

25-Hydroxy VD2-D6 is a labelled metabolite of 25-Hydroxy VD2 (T15242).

UGT1A1-IN-1 (Compound 2) 是一种非竞争性 UGT1A1(尿苷二磷酸葡萄糖醛酸转移酶 1A1)抑制剂。它能够有效抑制由 UGT1A1 介导的 1-O-葡萄糖醛酸结合过程，其 IC50 和 Ki 值分别为 1.33 μM 和 5.02 μM。研究表明，UGT1A1-IN-1 与胆红素 (Bilirubin) 在 UGT1A1 酶上的配体结合位点相同。由于该化合物在人肝微粒体 (HLM) 中表现出良好的反应活性且具有荧光特性，它常被用作 UGT1A1 的高亲和力荧光探针底物，用于研究胆红素代谢障碍及药物相互作用。

TEI-9648, a Vitamin D3 Lactone analogue, is a potent and specific vitamin D receptor (VDR) antagonist. TEI-9648 inhibits VDR/VDRE-mediated genomic actions of 1α,25(OH)2D3. TEI-9648 also inhibits HL-60 cell differentiation induced by of 1α,25(OH)2D3. TEI-9648 has the potential for bone metabolism research[1][2]. TEI-9648 (10-1000 nM) dose-dependently blocks the reciprocal changes of CD11b and CD71 expression associated with HL-60 cell differentiation induced by 1α,25(OH)2D3[1]. TEI-9648 has consistently weaker suppressive effect than TEI-9647[1]. TEI-9648 can not induce cell differentiation even after treatment at 1 μM in HL-60 cell[1]. TEI-9648 alone can not induce activation of NBT-reducing activity or α-NB esterase activity. In contrast, TEI-9648 markedly suppresses the up-regulation induced by 1α,25(OH)2D3 (0.1 nM) in HL-60 cells[1]. [1]. Miura D, et al. Antagonistic action of novel 1α,25-dihydroxyvitamin D3-26, 23-lactone analogs on differentiation of human leukemia cells (HL-60) i