Benzenesulfonic acids and derivatives
Medchemexpress LLC Cromolyn disodium | 15826-37-6 | 100.0% | 1 G
Cromolyn disodium (Cromoglycate disodium) is an orally active GSK-3β inhibitor and a mast cell stabilizer. It inhibits the release of mediators from mast cells, regulates reflex bronchoconstriction, and reduces non-specific bronchial hyperreactivity, making it useful in the research of bronchial asthma. This compound also demonstrates anti-inflammatory, anti-allergic, anti-histamine, anti-cancer, and neuroprotective effects.
- Orally active GSK-3β inhibitor
- Mast cell stabilizer
- Inhibits release of mediators from mast cells
- Regulates reflex bronchoconstriction
- Reduces non-specific bronchial hyperreactivity
- Exhibits anti-inflammatory properties
- Exhibits anti-allergic properties
- Exhibits anti-histamine properties
- Demonstrates anti-cancer effects
- Provides neuroprotective effects
Medchemexpress LLC 2-Ketoglutaric acid (Standard) | 328-50-7 | 99.5% | 146.10 | 10 MG
2-Ketoglutaric acid (Standard) is an analytical standard for research and analytical applications. Also known as Alpha-Ketoglutaric acid or 2-Oxoglutaric acid, this compound is an intermediate in ATP or GTP production within the Krebs cycle and serves as the primary carbon skeleton for nitrogen-assimilatory reactions. It also functions as a reversible inhibitor of tyrosinase (IC50=15 mM).
- Intended for research and analytical applications.
- Intermediate in ATP or GTP production in the Krebs cycle.
- Major carbon skeleton for nitrogen-assimilatory reactions.
- Reversible inhibitor of tyrosinase (IC50=15 mM).
- Used in qualitative, quantitative, and methodological research experiments in HPLC, GC, and MS.
- Endogenous metabolite found in human blood, breast milk, cellular cytoplasm, cerebrospinal fluid (CSF), feces, saliva, and urine.
- Appears as a white to off-white solid.
Medchemexpress LLC P-toluenesulfonic acid-d7 monohydrate | 1219795-22-8 | 99.8% | 197.26 g·mol⁻¹ | C7H3D7O4S | 100 MG
p-Toluenesulfonic acid-d7 monohydrate is a deuterium-labeled analogue of p-toluenesulfonic acid supplied as a monohydrate for research use. It provides an isotopically labeled, high-purity acid useful as an internal standard, tracer, or reagent in analytical and synthetic applications, enabling accurate quantitation and reduced background in spectroscopic and mass-spectrometric methods.
- High isotopic enrichment and purity (≈99.8%) for analytical confidence.
- Suitable as an internal standard for NMR, GC-MS, and LC-MS quantitation.
- Solid monohydrate form with good solubility in common solvents.
- Stable when stored under recommended conditions (-20°C, protect from light).
- Enables tracer studies and improved accuracy in quantitative assays.
Medchemexpress LLC P-toluenesulfonic acid-d7 monohydrate | 1219795-22-8 | 99.8% | 197.26 | C7H3D7O4S | 10 MG
p-Toluenesulfonic acid-d7 monohydrate is a deuterium-labeled analog of p-toluenesulfonic acid (monohydrate) used as a strong organic acid and catalyst in organic synthesis and analytical studies. The deuterium labeling supports mechanistic investigations and NMR tracing, and the material is supplied at high isotopic and chemical purity for research use.
- Deuterium-labeled for tracing and NMR studies.
- Monohydrate form for consistent handling and reproducibility.
- High purity (99.76%) suitable for analytical and research applications.
- Functions as a strong organic acid and catalyst in synthesis.
- Available in small pack sizes for laboratory and analytical work.
Medchemexpress LLC P-toluenesulfonic acid-d7 monohydrate | 1219795-22-8 | 99.8% | 197.26 g/mol | C7H3D7O4S | 25 MG
p-Toluenesulfonic acid-d7 monohydrate is the deuterium-labeled monohydrate of p-toluenesulfonic acid. It functions as a strong organic acid and is used both as an acid catalyst in synthetic chemistry and as an internal standard or tracer for quantitative NMR, GC-MS, and LC-MS analyses.
- Deuterium-labeled for use as an internal standard or tracer in NMR and mass spectrometry.
- High isotopic purity (99.76%) for accurate quantitative analysis.
- Solid form, easy to weigh and handle for small-scale analytical applications.
- Suitable as an acid catalyst in organic synthesis.
- Available in multiple small package sizes for analytical workflows.
![eMolecules 17625-03-5 | 3-Sulfobenzoic acid monosodium salt | Combi-Blocks, Inc. | MFCD00066378 | 224.160 | C7H5NaO5S | 95.000 | [Na+].OC(=O)c1cccc(c1)S([O-])(=O)=O | 25g | 603138216](https://assets.fishersci.com/TFS-Assets/CCG/product-images/502184095.JPG-250.jpg)
eMolecules 17625-03-5 | 3-Sulfobenzoic acid monosodium salt | Combi-Blocks, Inc. | MFCD00066378 | 224.160 | C7H5NaO5S | 95.000 | [Na+].OC(=O)c1cccc(c1)S([O-])(=O)=O | 25g | 603138216
3-Sulfobenzoic acid monosodium salt | Combi-Blocks, Inc. | 17625-03-5 | MFCD00066378 | 224.160 | C7H5NaO5S | 95.000 | [Na+].OC(=O)c1cccc(c1)S([O-])(=O)=O | 25g | 603138216
eMolecules 77182-82-2 | DL-Phosphinothricin, monoammonium salt | Apollo Scientific198.159 | C5H15N2O4P | 0.000 | N.CP(O)(=O)CCC(N)C(O)=O | 1g | 562428419
DL-Phosphinothricin, monoammonium salt | Apollo Scientific | 77182-82-2198.159 | C5H15N2O4P | 0.000 | N.CP(O)(=O)CCC(N)C(O)=O | 1g | 562428419
Medchemexpress LLC 2-Ketoglutaric acid-13C | 108395-15-9 | 97.9% | 147.09 | 500 UG
2-Ketoglutaric acid-13C is a 13C labeled 2-Ketoglutaric acid. It is an intermediate in the production of ATP or GTP in the Krebs cycle and serves as the primary carbon skeleton for nitrogen-assimilatory reactions. This compound can be utilized as a tracer or as an internal standard for quantitative analysis. Stable heavy isotopes have been incorporated into drug molecules as tracers for quantitation during drug development.
- 13C labeled compound
- Intermediate in ATP or GTP production in Krebs cycle
- Primary carbon skeleton for nitrogen-assimilatory reactions
- Reversible inhibitor of tyrosinase (IC50 of 15 mM)
- Can be used as a tracer
- Can be used as an internal standard for quantitative analysis (NMR, GC-MS, LC-MS)
Medchemexpress LLC 2-Ketoglutaric acid Sodium | 22202-68-2 | 98.0% | 168.08 | 100 MG
2-Ketoglutaric acid Sodium | 22202-68-2 | 98.0% | 168.08 | 100 MG
Medchemexpress LLC I-138 | 2098211-50-6 | C26H23F3N6O | 50 MG
I-138 is an orally active, reversible inhibitor of USP1-UAF1 (IC50: 4.1 nM; Ki: 5.4 nM), structurally related to ML323. It induces monoubiquitination of FANCD2 and PCNA in cells and eliminates USP1 autocleavage in cells.
- Eliminates USP1 self-lysis in HAP-1 USP1 WT and knockout cells
- Induces monoubiquitination of FANCD2 and PCNA in MDA-MB-436 cells
- Dose-dependently inhibits MDA-MB-436 cell viability
- Results in USP1 inhibition and modest antitumor activity in mice bearing MDA-MB-436 tumors
- Benefits BRCA1/2 mutant tumor inhibition when combined with Niraparib