Ramiprilat acyl-β-D-glucuronide is an acyl glucuronide metabolite of Ramiprilat. Ramiprilat acyl-β-D-glucuronide undergoes methylation on its glucuronic acid moiety during solid phase extraction with strong cation exchanger cartridges, forming a methylated derivative. Ramiprilat acyl-β-D-glucuronide undergoes in-source conversion to Ramiprilat in mass spectrometry, with conversion extent proportional to declustering potential voltage.

RAI-20 (H018) is an orally active JAK1/JAK2 dual inhibitor (IC50=15.1 and 22.7 nM). RAI-20 exhibits excellent pharmacokinetic properties, including plasma stability, systemic exposure, and a long half-life. In a collagen-induced arthritis rat model, RAI-20 shows significant anti-inflammatory and anti-arthritic activities, effectively reducing paw swelling volume and arthritis index. RAI-20 can be used for research on the pathogenesis of rheumatoid arthritis.

RAFKBP12 is a FKBP12 PROTAC degrader. RAFKBP12 demonstrates the feasibility of the CAP-TAC strategy, which enables proteasome-dependent degradation of FKBP12 that is independent of E3 ubiquitin ligases and protein ubiquitination. (Pink: FKBP12 ligand ; Blue: RPN13 ligand ; Black: linker).

RA190-PEG1-NH2, RA190 derivative, is an E3 ligase ligand. RA190-PEG1-NH2 can be used to synthesis FKBP12 PROTAC degrader RAFKBP12.

R214127 is a selective mGlu1 receptor antagonist with IC50 values of 6 and 14 nM for rat and human mGlu1a. R214127 acts on a site from the glutamate binding pocket, and competes for the same transmembrane segment VII as other noncompetitive mGlu1 antagonists.

R-130823 is an orally active, highly selective p38α inhibitor with an IC50 of 22 nM against p38α, an IC50 of 820 nM against p38β, and no activity against p38γ or p38δ. R-130823 downregulates downstream cartilage degradation and inflammatory mediators, and inhibits the release of MMP-13, MMP-1 and PGE2. R-130823 reduces hind paw swelling, improves hyperalgesia, and blocks arthritis progression.\nR-130823 is applicable to research related to osteoarthritis and rheumatoid arthritis.

R06039-696 is a neuropeptide S receptor (NPSR) agonist with an EC50 of 91 nM. R06039-696 can participate in regulating various biological functions such as arousal, stress and anxiety responses, memory processes, and food intake by activating NPSR.

R06039-636 is an agonist of the Neuropeptide S receptor (NPSR) with an EC50 value of 94nM.

Quizalofop-p-tefuryl is an aryloxyphenoxypropionate herbicide. Quizalofop-p-tefuryl exhibits medium-high persistence in distilled water.

Quinotolast is an orally active antiallergic agent. Quinotolast inhibits histamine release from rat peritoneal cells. Quinotolast inhibits cutaneous cromoglycate in guinea pig model. Quinotolast has inhibitory effect on histamine and peptide leukotrienes release from guinea pig lung fragments and mouse cultured mast cells. Quinotolast can be studied in allergy-related research.

Quindoxin is an antibacterial and growth promoter, commonly used in the livestock industry. Quindoxin exhibits clear dose-dependent mutagenic activity against Salmonella typhimurium TA98 and TA100 strains. Quindoxin can cause DNA damage and has potential genotoxicity and carcinogenic risks.

Quilostigmine (HP-290) is an orally active Physostigmine analogue, acetylcholinesterase (IC50: 148 nM for rat brain acetylcholinesterase) inhibitor. Quilostigmine has a long-lasting effect on tremors. Quetiapine can be used in the research of Alzheimer's disease.

QS-IN-1 (Compound 10 in Table 2 on page 18) is a quorum sensing (QS) inhibitor with an IC50 of 1.22 μM against agr-type QS. QS-IN-1 is applicable to the research of bacterial infections.

QO-83, Retigabine analogue, is a voltage-gated potassium channel KCNQ2 (Kv7.2) activator with an EC50 of 0.56 μM. QO-83 binds to a single hydrophobic pocket of KCNQ2-CaM complex in closed conformation. QO-83 induces a negative shift in the voltage-dependent activation curve of KCNQ2 channels, increasing the channel's voltage sensitivity. QO-83 can be used for the research of epilepsies.

QBS10072S dihydrochloride is a bifunctional chemotherapeutic agent that can cross the blood-brain barrier (BBB), comprising a LAT1-targeting domain and a cytotoxic domain. QBS10072S dihydrochloride exhibits inhibitory potency against LAT1-mediated substrate uptake (IC50 = 21 μM) of approximately 50-fold higher than that against LAT2 (IC50 = 1100 μM). QBS10072S dihydrochloride enters LAT1-expressing tumor cells via LAT1-mediated active transport, induces DNA interstrand crosslinking, and causes DNA damage and cell death. QBS10072S dihydrochloride can be used for the research of glioblastoma and aggressive T-cell lymphoma.

PZ-1129 is a selective 5-HT7 receptor ligand with a Ki of 7 nM. PZ-1129 shows Ki values of 159 and 24 nM for 5-HT1A receptor and D2 receptor. PZ-1129 can inhibit the constitutive cAMP production mediated by the Gs signaling pathway (EC50 = 13.7 nM). PZ-1129 can be used for the research of emotional disorders, such as depression and bipolar disorder.

Pyridine-3-sulfonyl chloride belongs to the substituted sulfonyl chloride class. Due to its high proton affinity, it can be used as a derivatizing agent.

Pyrazine diazohydroxide (NSC 361456) sodium is an anti-tumor agent that forms DNA adducts via the reactive pyrazine diazonium ion. Pyrazine diazohydroxide sodium can be used for the study of renal cancer, colorectal cancer, melanoma and leukemia.

PXS 64, a mannose-6-phosphate (M6P) analogue. a lipophilic prodrug of PXS 25. PXS 64 is an effective anti-fibrotic agent by inhibiting the activation of latent TGF-β1. PXS64, inhibits fibrosis via TGF-β1 pathway in human lung fibroblasts. PXS 64 reduces TGFβ-mediated collagen IV, fibronectin, MCP-1, and phospho-smad2 expression in kidney cells. PXS 64 reduces collagen deposition in dermal scar fibroblasts. PXS 64 can be used for the research of chronic kidney disease, idiopathic pulmonary fibrosis, scarring.

PXS 25 is a cation-independent mannose 6-phosphate receptor (CI-M6PR) inhibitor that inhibits CI-M6PR-mediated activation of latent TGF-β1. PXS 25 inhibits conversion of high glucose-induced latent TGF-β1 to active TGF-β1 in proximal tubule cells under normoxic conditions. PXS 25 suppresses high glucose-induced fibronectin, collagen IV production, and phosphorylated Smad 2 in proximal tubule cells under normoxic conditions. PXS 25 has antifibrotic properties in skin fibroblasts. PXS 25 can be used for the research of diabetic nephropathy.

PU-11 is a Hsp90α/Hsp90β inhibitor with IC50 values of 18.6 μM and 89.8 μM and Kd values of 2 and 4.2 μM. PU-11 binds to the ATP-binding pocket of Hsp90α and Hsp90β and displays selective binding preference for Hsp90α over Hsp90β, mediated by the nonconserved Hsp90α Ser52 residue. PU-11 can be used for the research of neurodegenerative disorders.

PTPN2-IN-3 (example 52) is a PTPN2 inhibitor that can be used in tumor research.

PTPN2-IN-2 is a potent and orally active PTPN2 inhibitor (IC50 = 7.05 nM) that enhances the IFN-γ signaling pathway. PTPN2-IN-2 inhibits PTP1B with an IC50 of 9.88 nM. PTPN2-IN-2 inhibits tumor growth, promotes the activation and infiltration of tumor immune cells in a B16-OVA mouse model. PTPN2-IN-2 can be used for the research of melanoma.

PTP1B-IN-33 is a PTP1B inhibitor with a human IC50 of 2.45 μM and over 20-fold selectivity for PTP1B over SHP2. PTP1B-IN-33 enhances π-Alkyl interaction with PTP1B to increase WPD loop closure degree. PTP1B-IN-33 can be used for the research of cancer, diabetes, autoimmune deficiency diseases.

p-Toluenesulfonamide-15N is the 15N-labeled p-Toluenesulfonamide. p-Toluenesulfonamide is an intermediate and plasticizer. p-Toluenesulfonamide is also the main degradation product of the disinfectant Chloramine-T in water. p-Toluenesulfonamide facilitates the localization of fluorescent probes to the endoplasmic reticulum.

PTH1R agonist 4 (Example 63) is a parathyroid hormone 1 receptor (PTH1R) agonist with a pEC50 value greater than 7. PTH1R agonist 4 can be used for the study of bone diseases, such as osteoporosis.

PTH1R agonist 1 (Example 2) is a parathyroid hormone 1 receptor (PTH1R) agonist. PTH1R agonist 1 can be used for research of hypoparathyroidism and osteoporosis.

PTERi is a selective inhibitor of PTER with selectivity towards HDACs. PTERi increases the level of N-acetyltaurine in both lean and obese mice, and reduces food intake in obese mice. PTERi can be used in the research of obesity.

PSMA ligand 3 is a PSMA-targeting ligand of Psa-AR. Psa-AR can be used for cancer research.

P-SCN-Bn-NOTA is a metal chelator and molecular imaging probe precursor that allows radiolabeling with Ga-68. P-SCN-Bn-NOTA can be conjugated to CD70-specific molecules B3, B6, ABDB3 and ABDB6 to form NOTA-labeled derivatives. P-SCN-Bn-NOTA is applicable for preclinical PET/CT imaging of CD70-expressing tumors in NCG mouse PDX models. P-SCN-Bn-NOTA can be used in studies related to CD70-positive tumors.