Aaf-Arg-OH HCl
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Aaf-Arg-OH HCl

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Aaf-Arg-OH HCl, a substrate of carboxypeptidase B-type enzymes, has been used to determine the activation of TAFI (thrombin activatable fibrinolysis inhibitor, carboxypeptidase U) by thrombin and thrombin-thrombomodulin.

Category
L-Amino Acids
Catalog number
BAT-015297
CAS number
442158-31-8
Molecular Formula
C14H20N6O4.HCl
Molecular Weight
372.81
Aaf-Arg-OH HCl
IUPAC Name
(2S)-5-(diaminomethylideneamino)-2-[(4-methoxyphenyl)iminocarbamoylamino]pentanoic acid;hydrochloride
Synonyms
N-(4-Methoxyphenylazoformyl)-Arg-OH HCl; N2-{[(4-Methoxyphenyl)diazenyl]carbonyl}-L-arginine hydrochloride (1:1); L-Arginine, N2-[[2-(4-methoxyphenyl)diazenyl]carbonyl]-, hydrochloride (1:1)
Appearance
Orange-red Powder
Purity
≥95% by HPLC
Melting Point
128°C
Storage
Store at -20°C
Solubility
Soluble in Methanol
InChI
InChI=1S/C14H20N6O4.ClH/c1-24-10-6-4-9(5-7-10)19-20-14(23)18-11(12(21)22)3-2-8-17-13(15)16;/h4-7,11H,2-3,8H2,1H3,(H,18,23)(H,21,22)(H4,15,16,17);1H/t11-;/m0./s1
InChI Key
NIIJGPSWDVQPDZ-MERQFXBCSA-N
Canonical SMILES
COC1=CC=C(C=C1)N=NC(=O)NC(CCCN=C(N)N)C(=O)O.Cl

Aaf-Arg-OH HCl, also recognized as Acetylarginylhydroxamic Acid Hydrochloride, serves as a fundamental biochemical reagent with diverse applications in scientific and medical domains. Here are the key applications:

Protease Inhibition Studies: Aaf-Arg-OH HCl emerges as a potent inhibitor targeting serine proteases in the realm of biochemical research. By binding intricately to the active sites of these proteases, it effectively halts the catalysis of peptide bonds, paving the way for in-depth explorations into enzyme kinetics and inhibition mechanisms. This critical exploration is instrumental in the quest for developing therapeutic avenues tailored to combat protease-associated maladies, including cancers and inflammatory conditions.

Enzyme Assay Development: Delving into the realm of enzyme assay development, Aaf-Arg-OH HCl assumes a pivotal role in calibrating and standardizing protease activity measurements. Its inhibitory prowess serves as a stringent control mechanism, ensuring the precision and sensitivity of enzyme assays. This meticulous calibration guarantees the generation of accurate and reproducible results, enhancing the reliability of research findings in both investigative and diagnostic settings.

Pharmaceutical Research: Positioned as a crucial asset in the initial phases of drug discovery, Aaf-Arg-OH HCl aids researchers in the screening and characterization of potential protease inhibitors. Its robust inhibition profile offers valuable insights, aiding in the identification of promising drug candidates for a myriad of ailments. Unraveling its intricate interplay with proteases empowers scientists to craft more potent and selective inhibitors, pushing the boundaries of pharmaceutical innovation.

Biotechnology Applications: Within the dynamic realm of biotechnology, Aaf-Arg-OH HCl finds extensive utility in unraveling the intricacies of protein degradation pathways. By selectively inhibiting specific proteases, researchers embark on a journey to illuminate the roles of these enzymes in the realms of protein turnover and stability. This knowledge proves invaluable in optimizing production processes for proteins and enhancing the quality benchmarks for biopharmaceuticals, fueling advancements in biotechnological frontiers.

1. Standardized Hybrid Closed-Loop System Reporting
Viral N Shah, Satish K Garg Diabetes Technol Ther. 2021 May;23(5):323-331. doi: 10.1089/dia.2020.0622. Epub 2020 Nov 25.
The hybrid closed-loop (HCL) system has been shown to improve glycemic control and reduce hypoglycemia. Optimization of HCL settings requires interpretation of the glucose, insulin, and factors affecting glucose such as food intake and exercise. To the best of our knowledge, there is no published guidance on the standardized reporting of HCL systems. Standardization of HCL reporting would make interpretation of data easy across different systems. We reviewed the literature on patient and provider perspectives on downloading and reporting glucose metric preferences. We also incorporated international consensus on standardized reporting for glucose metrics. We describe a single-page HCL data reporting, referred to here as "artificial pancreas (AP) Dashboard." We propose seven components in the AP Dashboard that can provide detailed information and visualization of glucose, insulin, and HCL-specific metrics. The seven components include (A) glucose metrics, (B) hypoglycemia, (C) insulin, (D) user experience, (E) hyperglycemia, (F) glucose modal-day profile, and (G) insight. A single-page report similar to an electrocardiogram can help providers and patients interpret HCL data easily and take the necessary steps to improve glycemic outcomes. We also describe the optimal sampling duration for HCL data download and color coding for visualization ease. We believe that this is a first step in creating a standardized HCL reporting, which may result in better uptake of the systems. For increased adoption, standardized reporting will require input from providers, patients, diabetes device manufacturers, and regulators.
2. Effect of Ca(OH)2 on the Release Characteristics of HCl during Sludge Combustion
Zhenghui Xu, Jiankang Tan, Chunhua Hu, Ping Fang, Xiang Xiao, Jianhang Huang, Haiwen Wu, Zijun Tang, Dongyao Chen ACS Omega. 2020 Oct 15;5(42):27197-27203. doi: 10.1021/acsomega.0c03286. eCollection 2020 Oct 27.
With the addition of Ca(OH)2, the effects of combustion temperature, moisture, sludge particle size, and chlorine-containing additives on the removal of HCl during sludge combustion were studied. The experimental results showed that combustion temperature and moisture content promoted the formation of HCl and Ca(OH)2 played a key role in the formation of HCl during sludge combustion. Under the best conditions of a sludge particle size of 380-250 μm, moisture content of 5%, temperature of 850 °C, and Ca(OH)2/sludge weight ratio of 3/10, the HCl capture efficiency was 79.81%. In addition, the effect of PVC on the production of HCl was greater than that of NaCl, probably because the lattice energy of NaCl was much higher, indicating that inorganic chlorine was not the main source of HCl. Ca(OH)2 can effectively inhibit the formation of HCl, which had practical guiding significance for the formation of HCl during the sludge combustion, especially the sludge containing chlorine.
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