p 56

CGP 56999A is an antagonist of GABA(B) receptor, it enhances expression of brain-derived neurotrophic factor and attenuates dopamine depletion in the rat corpus striatum.

P 569 is an MRI contrast medium.

Docetaxel (RP-56976) 是紫杉醇的半合成类似物，是一种微管解聚抑制剂 (IC50=0.2 μM)。Docetaxel 可以减弱 bcl-2 和 bcl-xL 基因表达的影响，具有诱导凋亡、抗肿瘤活性。

Docetaxel trihydrate (RP-56976 Trihydrate) 是一种抗肿瘤试剂，抑制微管解聚的IC50值为 0.2 μM。它是紫杉醇的半合成类似物，能减弱 bcl-2 和 bcl-xL 基因表达的影响。它阻滞G2 M 细胞周期，导致细胞凋亡。

CP-5609 is a new class of carbapenems with enhanced antimicrobial activity.

Sp-5,6-DCl-cBIMPS 为一种高效特异的 cAMP 依赖性蛋白激酶(cAMP-PK)激活剂，能够促进胰岛素释放，并抑制U46619引起的血小板Rho、Gq及G12 G13的激活[3]。

EXP-561 Free Base is an investigational drug that acts as an inhibitor of the reuptake of serotonin, dopamine, and norepinephrine.

EXP-561 monohydrate is an investigational drug that acts as an inhibitor of the reuptake of serotonin, dopamine, and norepinephrine.

Clarithromycin (A-56268) 具有广谱的抗菌活性。它抑制 CYP3A4催化的三唑仑 α-羟基化，IC50(Ki) 值为 56 (43) μM。它抑制 HERG 钾电流。它可削弱连接 hERG1 和 PI3K 的信号通路影响自噬流 。

Octanoic acid-13C is intended for use as an internal standard for the quantification of octanoic acid by GC- or LC-MS. Octanoic acid is a medium-chain saturated fatty acid. It has been found in Teleme cheeses made from goat, ovine, or bovine milk.1 Octanoic acid is active against the bacteria S. mutans, S. gordonii, F. nucleatum, and P. gingivalis (IC80s = <125, <125, 1,403, and 2,294 μM, respectively).2 Levels of octanoic acid are increased in the plasma of patients with medium-chain acyl-CoA dehydrogenase (MCAD) deficiency, an inborn error of fatty acid metabolism characterized by hypoketotic hypoglycemia, medium-chain dicarboxylic aciduria, and intolerance to fasting.3,4 |1. Mallatou, H., Pappa, E., and Massouras, T. Changes in free fatty acids during ripening of Teleme cheese made with ewes', goats', cows' or a mixture of ewes' and goats' milk. Int. Dairy J. 13(1-3), 211-219 (2003).|2. Hyang, C.B., Alimova, Y., Myers, T.M., et al. Short- and medium-chain fatty acids exhibit antimicrobial activity for oral microorganisms. Arch. Oral Biol. 56(7), 650-654 (2011).|3. Onkenhout, W., Venizelos, V., van der Poel, P.F.H., et al. Identification and quantification of intermediates of unsaturated fatty acid metabolism in plasma of patients with fatty acid oxidation disorders. Clin. Chem. 41(10), 1467-1474 (1995).|4. Rinaldo, P., O'Shea, J.J., Coates, P.M., et al. Medium-chain acyl-CoA dehydrogenase deficiency. Diagnosis by stable-isotope dilution measurement of urinary n-hexanoylglycine and 3-phenylpropionylglycine. N. Engl. J. Med. 319(20), 1308-1313 (1988).

Clarithromycin-13C-d3 是 Clarithromycin 的 13C 和氘代化合物。Clarithromycin 的 CAS 号为 81103-11-9。Clarithromycin 具有广谱的抗菌活性。它抑制CYP3A4催化的三唑仑 α-羟基化，IC50(Ki) 值为 56 (43) μM。它抑制 HERG 钾电流。它可削弱连接 hERG1 和 PI3K 的信号通路影响自噬流 。

YW3-56 is an inhibitor of protein arginine deiminase 2 (PAD2) and PAD4 (IC50s = 0.5-1 and 1-5 μM, respectively).1It inhibits the growth of U2OS osteosarcoma cells (IC50= ~2.5 μM) in a p53-dependent mannerviainduction of SESN2 and subsequent inhibition of mTORC1. YW3-56 (10 mg kg) reduces tumor growth in an S-180 murine sarcoma tumor model. It also inhibits tumor growth in the 1883 MDA-MB-231 breast cancer bone metastasis mouse xenograft model.2 1.Wang, Y., Li, P., Wang, S., et al.Anticancer peptidylarginine deiminase (PAD) inhibitors regulate the autophagy flux and the mammalian target of rapamycin complex 1 activityThe Journal of Biological Chemisty287(31)25941-25952(2012) 2.Wang, S., Chen, X.A., Hu, J., et al.ATF4 gene network mediates cellular response to the anticancer PAD inhibitor YW3-56 in triple-negative breast cancer cellsMol. Cancer Ther.14(4)877-888(2015)

SID 26681509 是可逆的，竞争性的人组织蛋白酶 L 选择性抑制剂，IC50为 56 nM。它抑制Plasmodium falciparum 的体外繁殖，IC50为15.4 μM，抑制Leishmania major，IC5012.5 μM。

1,8-Dihydroxy-p-menth-3-en-2-one 是一种天然产物，可用于生命科学领域的相关研究。其产品编号为 TN5870，CAS号为 1392224-56-4。

Purfalcamine is an orally active, selective Plasmodium falciparum calcium-dependent protein kinase 1 (PfCDPK1) inhibitor with an IC50 of 17 nM and an EC50 of 230 nM. Purfalcamine has antimalarial activity and causes malaria parasites developmental arrest at the schizont stage[1][2]. Purfalcamine has low activity against Toxoplasma gondii calcium-dependent protein kinase 3 (TgCDPK3)[1]. Purfalcamine (225, 450 nM) has no effect on the parasitemia in the first 32 hours. After about 40 hours, parasite level remains stable and then begins dropping[1]. Purfalcamine inhibits proliferation with EC50s of 171-259 nM for P. falciparum strains (3D7, Dd2, FCB, HB3 and W2), which indicates effectiveness against drug-resistant parasites[1]. Given that the EC50 value for P. falciparum (3D7) is 230 nM, Purfalcamine shows a therapeutic window ranging from 23-fold to 36-fold (EC50s for CHO=12.33 μM, HEp2=7.235 μM, HeLa=7.029 μM and Huh7=5.476 μM)[1]. Purfalcamine (10 mg kg; oral gavage; BID; for 6 days) demonstrates a delay in the onset of parasitemia in treated mice[1]. Purfalcamine (20 mg kg; orally gavage) exhibits a Cmax of 2.6 μM with a half-life of 3.1 hours[1]. Animal Model: Male BALB c mice, 7 weeks of age with the malaria parasite[1] [1]. Nobutaka Kato, et al. Gene expression signatures and small-molecule compounds link a protein kinase to Plasmodium falciparum motility. Nat Chem Biol. 2008 Jun;4(6):347-56. [2]. Rajshekhar Y Gaji, et al. Expression of the essential Kinase PfCDPK1 from Plasmodium falciparum in Toxoplasma gondii facilitates the discovery of novel antimalarial drugs. Antimicrob Agents Chemother. 2014 May;58(5):2598-607.

SARS-CoV-IN-3 is an effective SARS-CoV replication inhibitor.

HPK1-IN-56 (Compound A29) 是一种HPK1抑制剂，IC50为2.70 nM，抑制下游 p-SLP76 在Jurkat T细胞中的IC50为8.1 nM。此外，HPK1-IN-56 能诱导人PBMCs中IL-2的产生，并表现出抗癌作用，提升T细胞的杀伤能力及增强抗PD-1抗体的抗肿瘤功效。

AN3661, a potent antimalarial lead compound, targets a Plasmodium falciparum cleavage and polyadenylation specificity factor homologue subunit 3 (PfCPSF3). AN3661 inhibits Plasmodium falciparum laboratory-adapted strains, Ugandan field isolates, and murine P. berghei and P. falciparum infections[1]. AN3661 is active at nanomolar (IC50=20-56 nM) concentrations against P. falciparum laboratory strains known to be sensitive (3D7) or resistant (W2, Dd2, K1, HB3, FCR3 and TM90C2B), and AN3661 is similarly active in ex vivo studies of fresh Ugandan field isolates (mean ex vivo IC50=64 nM). AN3661 shows minimal cytotoxicity against mammalian cell lines, with the CC50 60.5 μM against Jurkat cells, and all other CC50 values greater than the highest concentrations tested (25 μM or above)[1].AN3661 inhibits the stability of P. falciparum transcripts[1]. AN3661 (50-200 mg.kg; p.o.; daily for 4 days) inhibits murine P. berghei infections with ED90 (4 days) 0.34 mg kg[1].AN3661 is administered orally for 4 days, beginning on the third day of infection, the ED90 4 days after initiation of treatment is 0.57 mg kg[1]. Animal Model: P. berghei-infected mice (malaria model)[1] [1]. Sonoiki E, et al. A potent antimalarial benzoxaborole targets a Plasmodium falciparum cleavage and polyadenylation specificity factor homologue. Nat Commun. 2017;8:14574. Published 2017 Mar 6.

PSMA-ALB-56是通过结合谷氨酸脲基 psma 结合实体、DOTA 螯合剂和基于4-(对碘苯基)-片段或 p(tolyl)-片段的白蛋白结合剂而设计的一种 PSMA-targeting 放射性配体,具有抗肿瘤活性。