contrast

Diatrizoate meglumine (Renocal) is the meglumine salt of diatrizoate, it is an organic, iodinated, radiopaque X-ray contrast medium used in diagnostic radiography.

Ferumoxytol (Magnetic Black) is a non-gadolinium based contrast agent for use in magnetic resonance imaging applications.

iosimide is a novel nonionic monomer contrast agent that can induce MV in cells.

Iopamidol (SQ-13396) is a benzenedicarboxamide compound. It has a role as a radioopaque medium, an environmental contaminant and a xenobiotic.

Spautin-1 is a novel autophagy inhibitor, IM inhibited the growth of K562 cells with IC50 of 1.03 μM. In contrast, co-treatment with Spautin-1 increased IM-induced inhibition of cell viability with IC50 of 0.45 μM.

14,15-Leukotriene D4 (14,15-LTD4) is a member of an alternate class of LTs synthesized by a pathway involving the dual actions of 15- and 12-lipoxygenases (15- and 12-LOs) on arachidonic acid via 15-HpETE and 14,15-LTA4 intermediates. 14,15-LTD4 is classified as an eoxin (EXD4), because it is formed mostly by eosinophils. However, mast cells and nasal polyps can synthesize 14,15-LTD4 as well. Little is known about the physiological actions of 14,15-LTD4. It has weak contractile activity on both guinea pig ileum and pulmonary parenchyma in contrast to the effects of 5-LO-derived LTs. However, in an in vitro permeability assay, 14,15-LTD4 can increase vascular permeability of human endothelial cell monolayers, with similar potency to that of 5-LO-derived LTs, resulting in plasma leakage, a hallmark of inflammation.

Perflexane (Fluorinert FC72) was developed as an ultrasound contrast agent.

Ioforminol, also known as GE-145 and AN-113111, is a new low-osmolar dimeric radiographic contrast agent. GE-145 exhibits similar preclinical properties to other dimeric radiographic contrast media. In addition, the low osmolality enables an iso-osmolar f

EC-17 (disodium salt), a folate receptor alpha (FRα) targeting contrast agent, exhibits fluorescent properties within the visible light spectrum, characterized by peak excitation and emission wavelengths of 470/520 nm, respectively.

Methiodal sodium is a crystalline salt used as a radiopaque contrast medium in intravenous urography.

Ioxilan is a low-osmolar, nonionic, and tri-iodinated diagnostic contrast agent used for excretory urography and contrast-enhanced computed tomographic (CECT) imaging of the head and body. Intravascularly injected causes opacification of vessels, allowing for radiographic visualization of internal structures until significant hemodilution occurs.

Gadobutrol is a medicinal product used in diagnostic magnetic resonance imaging (MRI) in adults and children. It provides contrast enhancement during cranial, spinal, breast, or other investigations. In the central nervous system, Gadobutrol works by high

11-deoxy Prostaglandin E2 (11-deoxy PGE2) is a stable, synthetic analog of PGE2 . In contrast to PGE2 which has bronchodilation effects, 11-deoxy PGE2 is a powerful bronchoconstrictor and contracts human respiratory tract smooth muscle with potencies ranging from 5 to 30 times higher than PGF2α .

Mn(II) protoporphyrin IX is a potent intravenous paramagnetic magnetic resonance contrast agent, known for its strong paramagnetic properties.

Nebentan (YM598) is a potent, selective and orally active non-peptide endothelin ETA receptor antagonist through the modification of Bosentan . Nebentan inhibits [125I] endothelin-1 binding to cloned human endothelin ETA and ETB receptor, with Ki of 0.697 nM and 569 nM, respectively[1]. YM598 can ameliorate the progression of cor pulmonale and myocardial infarction in vivo[2]. Nebentan inhibits the specific binding of [125I] endothelin-1 to endothelin ETA and ETB receptors in a concentration dependent manner,Ki values are 0.697 nM and 1.53 nM for human and rat endothelin ETA receptors, respectively. In contrast, YM598 exhibits low affinities for human and rat endothelin ETB receptors, with Ki values of 569 nM and 155 nM,respectively[1].In measurement of intracellular Ca2+ concentration, Nebentan concentration-dependently inhibits the increase in [Ca2+]i induced by 10 nM endothelin-1 in both CHO cells and A10 cells, the IC50 values are 26.2 nM for CHO cells and 26.7 nM for A10 cells, respectively[1]. Nebentan (oral administration; 0.1-1 mg/kg; 4 weeks) significantly inhibits the progression of pulmonary hypertension and the development of right ventricular hypertrophy[2].Nebentan (oral administration; 1 mg/kg; 30 weeks) significantly ameliorates the poor survival rate of CHF rats, it markedly reduces the hypertrophy of both ventricles as well as pulmonary congestion[2]. [1]. Hironori Yuyama, et al. Pharmacological Characterization of YM598, an Orally Active and Highly Potent Selective Endothelin ET(A) Receptor Antagonist. Eur J Pharmacol. 2003 Sep 30;478(1):61-71. [2]. Akira Fujimori, et al. YM598, an Orally Active ET(A) Receptor Antagonist, Ameliorates the Progression of Cardiopulmonary Changes and Both-Side Heart Failure in Rats With Cor Pulmonale and Myocardial Infarction. J Cardiovasc Pharmacol. 2004 Nov;44 Suppl 1:S354-7.

Mangafodipir trisodium can enhance contrast in magnetic resonance imaging (MRI) of the liver, is a contrast agent delivered intravenously.

HG-7-85-01 is a type II ATP competitive inhibitor targeting wild-type and gatekeeper mutations forms of Bcr-Abl, PDGFRα, Kit, and Src kinases. It effectively inhibits T315I mutant Bcr-Abl kinase, as well as KDR and RET kinases with IC50 values of 3 nM, 20 nM, and 30 nM, respectively. In contrast, HG-7-85-01 exhibits weak or no inhibition towards other kinases (IC50 >2 μM). Furthermore, this compound inhibits cell proliferation through the induction of apoptosis and by impeding cell-cycle progression.

Resolvins are a family of potent lipid mediators derived from both eicosapentaenoic acid and docosahexaenoic acid.[1] In addition to being anti-inflammatory, resolvins promote the resolution of the inflammatory response back to a non-inflamed state.[2] Resolvin D1 is produced physiologically from the sequential oxygenation of DHA by 15- and 5-lipoxygenase.[1] 17(R)-RvD1 is an aspirin-triggered epimer of RvD1 that reduces human polymorphonuclear leukocyte (PMN) transendothelial migration, the earliest event in acute inflammation, with equipotency to RvD1 (EC50 = ~30 nM).[3] 17(R)-RvD1 exhibits a dose-dependent reduction in leukocyte infiltration in a mouse model of peritonitis with maximal inhibition of ~35% at a 100 ng dose.[3] In contrast to RvD1, the aspirin-triggered form resists rapid inactivation by eicosanoid oxidoreductases. Analytical and biological comparisons of synthetic 17(R)-RvD1 with endogenously derived 17(R)-RvD1 have confirmed its identity as matching the natural product.[4]

11-deoxy PGF1β is a synthetic analog of PGF1β. In contrast to PGF2α and PGF1α, 11-deoxy PGF1β exhibits vasodepressor and bronchodilator activities in guinea pigs at a dose of 500 μg/kg.

Acetrizoic acid (Urokon) is the first monomeric ionic compound used as an X-ray contrast agent.

Lethedoside A was either inactive or weakly active against KB tumor cells, in contrast to previously isolated flavones from the same plant.

Nerindocianine is a hydrophilic, fluorescent diagnostic contrast agent that is predominantly metabolized by the kidneys, enabling non-invasive, intraoperative ureteral imaging.

Metrizamide is a nonionic radiopaque contrast agent.

Ioxaglic acid (P-286) is a negatively charged contrast agent commonly utilized as an inverse indicator for glycosaminoglycan (GAG) in computed tomography (CT). This compound is valuable for imaging human osteoarthritic cartilage, enabling the quantitative assessment of glycosaminoglycan content.

TEI-9648, an analogue of Vitamin D3 Lactone, acts as a potent and specific antagonist to the vitamin D receptor (VDR). This compound effectively blocks the genomic actions mediated by VDR and the Vitamin D responsive element (VDRE) of 1α,25(OH)2D3. Furthermore, TEI-9648 prevents the differentiation of HL-60 cells induced by 1α,25(OH)2D3, indicating its utility in bone metabolism studies[1][2].

Gadodiamide is an MRI contrast agent, used in MR imaging procedures to assist in the visualization of blood vessels.

Ioversol (MP-328) is a nonionic iodinated contrast agent.

AL 8810 is an 11β-fluoro analog of prostaglandin F2α (PGF2α) which acts as a potent and selective antagonist at the FP receptor. AL 8810 ethyl amide is an analog of AL 8810 in which the C-1 carboxyl group has been modified to an N-ethyl amide. This modification is analogous to the PG N-ethyl amides, as typified by Bimatoprost, that have been introduced as alternative PG ocular hypotensive prodrugs. In contrast to AL 8810 which contracted the cat iris, AL 8810 ethyl amide showed no contraction activity at concentrations up to 10-4 M and did not antagonize the activity of PGF2α-ethanolamide in this system.

Iosimenol is an amidobenzoic acid and a contrast agent.

Tylogenin, a steroidal aglycone generated by acid hydrolysis from two seasonal glycosides occurring in Tylophora sylvatica, inhibits IgE-induced basophil mediator release for allergic reactions. In the rabbit basophil-dependent serotonin release (BDSR) assay system, the inhibitory activity of tylogenin was significantly greater than that of its parent glycosides, tylophoroside and acetyltylophoroside, and that of dexamethasone. The activity of tylogenin was found to increase with the incubation time. In the human leukocyte-dependent histamine release test model, the glycosides had only a minimal activity. In contrast, tylogenin, with a geom mean IC50 = 49 microM, exerted a significantly greater potency than dexamethasone. These results suggest that tylogenin could represent a new class of antiallergic agents.

Super-chelating agent& MRI contrast agent

D(-)-Tartaric acid found in many plants, particularly tamarinds and grapes,it is used to generate carbon dioxide through interaction with sodium bicarbonate following oral administration. Carbon dioxide extends the stomach and provides a negative contrast medium during double contrast radiography.

Diatrizoic Acid (Amidotrizoic acid) is an organic, iodinated radiopaque X-ray contrast medium used in diagnostic radiography.

CAY10722 is an inhibitor of sirtuin 3 (SIRT3), a class III HDAC (71% inhibition at 200 μM). SIRT3 is involved in modulating metabolic homeostasis as a NAD+-dependent protein deacetylase in the mitochondria. SIRT3 functions as either an oncogene or tumor suppressor, depending on cancer cell type. High SIRT3 expression in patient-derived esophageal cancer tissues is associated with shorter survival and, in mice, downregulation leads to a lower tumor load. In contrast, low SIRT3 expression in patient-derived breast cancer cells is correlated with shorter survival.

BHPI is a potent ERα inhibitor that blocks nuclear estrogen–ERα-regulated gene expression effectively. It triggers sustained ERα-dependent activation of the endoplasmic reticulum (EnR) stress sensor, notably the unfolded protein response (UPR), and consistently inhibits protein synthesis. With an IC50 value targeting ERα, BHPI's mechanism involves the rapid hyperactivation of PLCγ on the plasma membrane in ERα(+) cancer cells, which produces inositol 1,4,5-triphosphate (IP3). This, in turn, opens EnR IP3R calcium channels, leading to a rapid depletion of EnR Ca(2+) stores. SIGNIFICANTLY, BHPI alters estrogen-ERα's usual effect of causing mild and transient UPR activation by inducing a severe and prolonged UPR activation, transforming the UPR from a protective to a toxic response.

Gadoxetate Disodium is used to evaluate focal liver lesions, such as hepatocellular carcinoma or liver metastasis on T1-weighted imaging. It is a contrast agent in magnetic resonance imaging (MRI) of the hepatobiliary system. It accumulates in normal, fun

HP661, a selective inhibitor of mitochondrial complex I (NADH dehydrogenase), impedes complex I activity by 77.6% at 1 µM, demonstrating lesser inhibition towards complex III (28.1%) and no inhibitory effects on complexes II and IV. It notably decreases the viability of human lung cancer cells—H460, NCI H441, and trametinib-resistant A549 cells (IC50s = 10.6, 29.7, and 15.1 nM, respectively)—which exhibit high levels of oxidative phosphorylation. In contrast, it shows minimal activity against NCI H358 lung cancer cells and non-cancerous HPNE and MRC-5 cells (IC50s = >10,000 nM for both), which have lower oxidative phosphorylation levels. Furthermore, in an H460 mouse xenograft model, HP661 at a dose of 30 mg/kg twice daily significantly reduces tumor volume and enhances the tumor-growth inhibitory effects of trametinib.

(-)-L-threo-PDMP is an enhancer of ganglioside biosynthesis. The (-)-L-threo-PDMP (1S,2S) isomer is the active stimulatory component of DL-threo-PDMP in contrast to (+)-D-threo-PDMP , which is an inhibitor of glucosylceramide synthetase. (-)-L-threo-PDMP upregulates GM3, GD3, and GQ1b synthase levels, which are glycosyltransferases involved in ganglioside biosynthesis, and increases ganglioside levels in cells. It increases neurite outgrowth and synapse formation in vitro and improves retention of a long-term memory learned prior to forebrain ischemia in rats when administered following ischemia at a dose of 40 mg/kg per day.

Diodone is an ionic monomeric contrast medium that was formerly used for a variety of diagnostic procedures.

PK14105 has been evaluated biologically as a potential radioligand for positron emission tomography (PET) studies targeting peripheral benzodiazepine binding sites (PBBS) receptors. When administered to rats with unilaterally lesioned striata, PK14105 was observed to quickly cross the blood-brain barrier, displaying significant radioactivity retention in the lesioned striatum, in contrast to the unlesioned striatum or cerebellar vermis. Additionally, PK14105 has the capability to inhibit receptor ligands, calcium channel ligands, and co-transporters in all salivary glands.

Gadobutrol is a nonionic, paramagnetic contrast agent developed for tissue contrast enhancement in magnetic resonance imaging (MRI)

Mevidalen, also known as LY3154207, is a novel, potent, and subtype selective human D1 positive allosteric modulator (PAM) with minimal allosteric agonist activity (EC50 = 3 nM). In contrast to orthosteric agonists, LY3154207 showed a distinct pharmacological profile without a bell-shaped dose-response relationship or tachyphylaxis in preclinical models. Identification of a crystalline form of free LY3154207 from the discovery lots was not successful. Instead, a novel cocrystal form with superior solubility was discovered and determined to be suitable for development. LY3154207 is now in clinical development as a potential first-in-class D1 PAM for Lewy body dementia..

DCVC inhibits pathogen-stimulated TNF-α in human extra placental membranes in vitro.Target: TNF-αin vitro: DCVC inhibits pathogen stimulated cytokine release from tissue punch cultures. DCVC (5-50 μM) significantly inhibits LTA-, LPS-, and GBS-stimulated cytokine release from tissue cultures as early as 4 h (P ≤ 0.05). In contrast, TCA (up to 500 μM) does not inhibit LTA-stimulated cytokine release from tissue punches. DCVC effects on LTA-stimulated and LPS-stimulated TNF-α release from tissue punch cultures of extraplacental membranes. DCVC effects on GBS-stimulated release of pro-inflammatory cytokines from extraplacental membranes in transwell cultures. [1]. Boldenow E, et al. The trichloroethylene metabolite S-(1,2-dichlorovinyl)-l-cysteine but not trichloroacetate inhibits pathogen-stimulated TNF-α in human extraplacental membranes in vitro. Reprod Toxicol. 2015 Apr;52:1-6. [2]. Lash LH, et al. Multigenerational study of chemically induced cytotoxicity and proliferation in cultures of human proximal tubular cells. Int J Mol Sci. 2014 Nov 18;15(11):21348-65. [3]. Yoo HS, et al. Comparative analysis of the relationship between trichloroethylene metabolism and tissue-specific toxicity among inbred mouse strains: kidney effects. J Toxicol Environ Health A. 2015;78(1):32-49.

Meglumine (Meglumin), a derivative of sorbitol, is used in conjunction with iodinated organic compounds as contrast medium.

Sprodiamide is a magnetic susceptibility-based MRI contrast agent.

Lophiraic acid is isolated from Lophira alata; in contrast to lophirone A, it does not have any biological activity.

Sodium diatrizoate is an iodinated radiopaque X-ray contrast agent used as a diagnostic aid in angiography, urography, and radiography. It induces mitochondrial renewal and oxidative stress through calcium dysregulation and activates apoptosis.

Iodixanol (Visipaque) is a nonionic hydrophilic compound commonly used as a contrast agent during coronary angiography.

Ethylene thiourea-d4 is a deuterated compound of Ethylene thiourea. Ethylene thiourea has a CAS number of 96-45-7. Ethylene thiourea is a pesticide used in fruit and vegetable production. Ethylene thiourea is also used as a novel contrast agent for MRI studies based on proton chemical exchange-dependent saturation transfer.

(±)-LY367385 is the racemic form of LY367385, and LY367385 is a highly potent and selective mGluR1a antagonist. LY367385 exhibits a high inhibitory activity against quisqualate-induced phosphoinositide (PI) hydrolysis, with an IC50 value of 8.8 μM. In contrast, its inhibitory activity against mGlu5a is greater than 100 μM.

Ethylene thiourea (NCIC03372) is a pesticide used in fruit and vegetable production. Ethylene thiourea is also used as a novel contrast agent for MRI studies based on proton chemical exchange-dependent saturation transfer.