as 19

AS19 is a potent, selective 5-HT7 receptor agonist (IC50: 0.83 nM; Ki: 0.6 nM). AS19 is selective for 5-HT7 over 5-HT1A, 5-HT1B, 5-HT1D, and 5-HT5A receptors (Kis: 89.7 nM, 490 nM, 6.6 nM and 98.5 nM, respectively).

VEGFR-2-IN-9 (KDR-in-4) 是一种高效的 KDR VEGFR2 抑制剂（IC50：7 nM）,可用于研究乳腺癌。

Antitumor agent-19 是一种肿瘤相关巨噬细胞的调节剂，在 RAW 264.7 细胞和 BMDM 细胞中的 EC50 分别为 17.18 μM 和 18.87 μM。

KFM19 是一种具有强效性和选择性的腺苷受体 (A1-receptor) 拮抗剂(IC50 ： 50 nM)，可用于研究神经系统疾病。

11β-HSD1 inibitor 19 对 hHSD1 和 mHSD1 显示抑制活性，IC50 为 16 nM 和 10 nM。

ZX-J-19J (N-(2,3-Diphenyl-6-quinoxalinyl)octanamide) 是 Cyclophilin J 的抑制剂，对肿瘤细胞生长有显着的抑制作用，与环孢素 A 相当，但比 5-氟尿嘧啶强得多。

TFIIH Modulator-19 诱导毛发硫营养不良组 A 蛋白的二聚化以调节 TFIIH 转录活性。

MG-T-19是一种TIM-3抑制剂（KD=0.26 μM），显著抑制TIM-3与PtdSer、CEACAM1和Gal-9的相互作用，增加PBMCs中TNF-α和IFN-γ的产生，从而重新激活T细胞对肿瘤的攻击能力。

CDK8 19-IN-51 是一种可口服且具有高效性的 CDK8 和 CDK19 双重抑制剂， 具有抗癌活性，对 CDK8 的 IC50 值为 5.1 nM，对 CDK19 的 IC50 值为 5.6 nM，可用于研究结直肠癌和胃癌。

Ned 19, a selective membrane-permeant non-competitive antagonist of NAADP, strongly inhibits tumor growth, vascularization, and lung metastases in mice.

ICCB-19 hydrochloride (ICCB-19 HCl) 是RIPK1激酶活性的间接抑制剂。它是一种 TRADD 抑制剂，可与 TRADD 的 N 端结构域结合，破坏其与 TRADD-C 和 TRAF2 的结合，诱导自噬和长寿命蛋白质的降解。

Protein Kinase C 19-31 acetate(121545-65-1 free base) 是一种蛋白激酶 C (PKC) 的肽抑制剂，源自 PKCa 的假底物调节结构域（残基 19-31），在 25 位用丝氨酸取代野生型丙氨酸作为蛋白激酶 C 底物肽，用于测试蛋白激酶 C 活性。

S19-1035为AKR1C3(aldehyde ketone reductase 1C3)的高效特异性抑制剂，其IC50值为3.04 nM，主要应用于肿瘤研究。

MIND4-19 是一种具有抗肿瘤活性的 SIRT2 抑制剂。

TAT-Gap19 acetate 是 connexin43 hemichannel (Cx43 HC) 的特异性抑制剂。 它穿过血脑屏障并减轻小鼠的肝纤维化。它不抑制相应的 Cx43 GJC。

PDE4-IN-19 (compound 1), 作为一种PDE4抑制剂，展示了对PDE4B1 和 PDE4D3 的出色抑制效果，其IC50值分别为 <10 nM 和 10-100 nM。

PROTAC SMARCA2 degrader-19 (Compound 46) 作为一种针对SMARCA2的PROTAC降解剂，能在A549和MV411细胞中实现其降解，具有DC50值小于100 nM。此外，该化合物在MV411细胞中对SMARCA4的降解效果较弱，DC50值超过1000 nM。

Casein kinase1δ-IN-19 (compound 492) 是一种高效的casein kinase1δ抑制剂，适用于阿尔茨海默病等神经退行性疾病的研究。

NF-κB-IN-19 (Compound 8) 是一种NF-κB抑制剂，通过NF-κB信号通路有效诱导肿瘤细胞DNA损伤，促进ROS生成，并诱导细胞自噬 (autophagy) 和凋亡 (apoptosis)。此外，它抑制VEGF和HIF-1α水平，并通过PI3K AKT和STAT-3途径在肿瘤细胞中展示抗增殖活性。NF-κB-IN-19 有效克服顺铂耐药性，表现出抗肿瘤活性。

Novel oxylipins, referred to as docosanoids, have been derived from C22polyunsaturated fatty acids 7(S),17(S)-dihydroxy-8(E),10(Z),13(Z),15(E),19(Z)-Docosapentaenoic acid (7(S),17(S)-hydroxy DPA) is a DPA-derived analog of the 17(S)-dihydroxy series of docosanoids known as protectins. Protectin D1, a DHA-derived dihydroxy fatty acid, exhibits potent anti-inflammatory activities.1,2,3Potentially, 7(S),17(S)-hydroxy DPA demonstrates similar properties; however, its biological activity has yet to be determined. 1.Serhan, C.N., Gotlinger, K., Hong, S., et al.Anti-inflammatory actions of neuroprotectin D1 protectin D1 and its natural stereoisomers: Assignments of dihydroxy-containing docosatrienesJ. Immunol.176(3)1848-1859(2006) 2.Ariel, A., and Serhan, C.N.Resolvins and protectins in the termination program of acute inflammationTRENDS in Immunology28(4)176-183(2007) 3.Schwab, J.M., Chiang, N., Arita, M., et al.Resolvin E1 and protectin D1 activate inflammation-resolution programmesNature447(7146)869-874(2007)

EDHF (endothelium-derived hyperpolarizing factor) is an unidentified mediator released from vascular endothelial cells in response to acetylcholine and bradykinin which is distinct from the NOS- (nitric oxide) and COX-derived (prostacyclin) vasodilators. Cytochrome P450 (CYP450) metabolism of polyunsaturated fatty acids produces epoxides such as (±)14(15)-EpETrE which are prime candidates for the actual active mediator. However, the CYP450 metabolites of eicosapentaenoic acid and docosahexaenoic acid have been little studied relative to arachidonate epoxygenase metabolites. (±)19(20)-EpDPA is a DHA epoxygenase metabolite, derived via epoxidation of the ω-3 double bond of DHA. The EDHF activity of (±)19(20)-EpDPA has not yet been determined. The epoxygenase metabolites of DHA have also been detected in a mouse inflammation model.

17-oxo-4(Z),7(Z),10(Z),13(Z),15(E),19(Z)-Docosahexaenoic acid is a metabolite of lipoxygenase-mediated oxidation of DHA that is produced endogenously by aspirin-enhanced COX-2 activity. It has been shown to activate Nrf2-dependent antioxidant gene expression, to act as a PPARγ agonist (EC50 = ~200 nM), and to inhibit pro-inflammatory cytokine and nitric oxide production at biological concentration ranges (5-25 μM).

Docosapentaenoic acid (DPA) is a ω-3 fatty acid found in fish oils. 17-oxo-7(Z),10(Z),13(Z),15(E),19(Z)-docosapentaenoic acid is a metabolite of lipoxygenase-mediated oxidation of DPA that is produced endogenously by aspirin-enhanced COX-2 activity. It has been shown to activate Nrf2-dependent antioxidant gene expression, to act as a PPARγ agonist (EC50 = ~200 nM), and to inhibit pro-inflammatory cytokine and nitric oxide production at biological concentration ranges (5-25 μM).

PI3K-IN-19 hydrochloride (WO2017153220, step 5) acts as a phosphatidylinositol-3-kinase (PI3K) inhibitor.