Description
Product Description
Paclitaxel (CAS 33069-62-4) is a natural diterpenoid compound from the taxane family, widely employed as a microtubule-stabilizing agent in preclinical oncology research. Its solution form allows for precise dosing, improved solubility, and reproducible delivery for in vitro and in vivo studies.
Paclitaxel binds to the β-subunit of tubulin, promoting polymerization and inhibiting depolymerization, thereby stabilizing microtubules. This hyperstabilization interferes with spindle assembly, arrests cells in G2/M phase, and induces apoptosis through intrinsic mitochondrial pathways. Researchers commonly use Paclitaxel solution to explore mitotic checkpoint signaling, cytotoxicity, apoptosis, combination therapy effects, and resistance mechanisms such as P-glycoprotein efflux and β-tubulin isotype switching.
The solution form ensures compatibility with high-throughput screening, microplate-based assays, and reproducible experimental setups. Bulk and wholesale options allow laboratories to conduct extended studies and multi-batch experiments without variability, supporting applications in cytotoxicity studies, cell-cycle regulation research, drug combination assays, and mechanistic pathway investigations.

Product Specifications
| Parameter | Specification / Data |
|---|---|
| Chemical Name / Synonyms | Paclitaxel; Taxol; NSC 125973 |
| CAS Number | 33069-62-4 |
| Molecular Formula | C47H51NO14 |
| Molecular Weight | 853.91 g/mol |
| Purity / Assay | ≥99% |
| Appearance | Clear to slightly yellow solution |
| Dosage Form | Solution for research use |
| Solvent | DMSO, ethanol, or mixed solvent (custom per batch) |
| Concentration | 1–10 mg/mL (customizable) |
| Storage Temperature | –20 °C; protect from light |
| Stability | Stable under frozen conditions; avoid repeated freeze-thaw cycles |
| Mechanistic Target | β-tubulin; microtubule polymerization; mitotic arrest |
| Structural Category | Taxane; microtubule-stabilizing agent |
| Applications | Cytotoxicity assays, apoptosis research, mitotic arrest studies, combination therapy research, drug-resistance modeling |
| Analytical Verification | HPLC, MS, NMR |
| Regulatory Notes | For laboratory research use only |
| Origin | Factory small-molecule supplier, China; bulk & wholesale available |
| Additional Data | SMILES: CC1=C2C(=C(C(=O)O2)OC3C(C(C(O3)CO)O)OC(=O)C4=CC=CC=C4)C(=O)OC5C(C(C(O5)CO)O)OC(=O)C6=CC=CC=C6 |
Mechanism of Action
Microtubule Stabilization
Paclitaxel binds to β-tubulin within microtubules, enhancing polymerization and preventing depolymerization. This stabilizes microtubules, interferes with dynamic spindle formation, and disrupts normal chromosome segregation.
Mitotic Arrest & Checkpoint Activation
Induces prolonged G2/M phase arrest
Activates spindle assembly checkpoint (SAC) proteins (MAD2, BUB1, BUBR1)
Causes cyclin B1 accumulation and mitotic block
Apoptosis Induction
Triggers intrinsic mitochondrial apoptotic pathway
Mitochondrial depolarization and cytochrome c release
Caspase-9 and caspase-3 activation
PARP cleavage and ROS generation
Resistance Mechanism Modeling
Paclitaxel is widely used to investigate drug-resistance mechanisms:
P-glycoprotein (P-gp) mediated efflux
β-tubulin isotype switching
Alterations in microtubule-associated proteins (MAPs)
Post-translational modifications affecting tubulin dynamics

Applications
Microtubule polymerization research
Mitotic checkpoint and G2/M arrest studies
Cytotoxicity and apoptosis assays
Drug combination and synergy testing
Resistance mechanism evaluation
High-throughput compound screening
Preclinical in vivo and in vitro pharmacology research
Side Effects (Preclinical Observations)
Cellular Effects:
Mitotic arrest, microtubule hyperstabilization, spindle abnormalities
ROS accumulation and DNA fragmentation
Apoptotic Effects:
Caspase activation and PARP cleavage
Mitochondrial dysfunction
Chromatin condensation and membrane blebbing
Laboratory Handling:
Cytotoxic: use PPE
Handle in fume hood
Avoid contact with skin, eyes, or ingestion
Dispose as hazardous chemical waste
Keywords
Paclitaxel bulk wholesale, CAS 33069-62-4, microtubule stabilizing agent, mitotic arrest reagent, apoptosis research, cytotoxicity research, taxane compound, preclinical oncology reagent, laboratory-grade Paclitaxel, OEM Paclitaxel supplier, solution formulation, high-purity Paclitaxel, bulk supply, research chemical.
Shipping Guarantee
Paclitaxel solution is shipped under validated cold-chain conditions at –20 °C with temperature-stable packaging and secondary protective sealing. International express couriers provide tracking, insurance, and priority delivery to preserve compound integrity.
Trade Assurance
Purity ≥99% verified by HPLC, MS, NMR
Batch consistency validated
Certificate of Analysis (CoA) included
OEM and bulk packaging available
Refund/replacement for any deviations from specification
Payment Support
PayPal
Credit Cards (Visa, MasterCard, AmEx)
Bank Transfer (T/T)
USDT / BTC / ETH
Corporate invoicing for bulk orders
Disclaimer
is for laboratory research only. Not for human or veterinary use. Users must follow institutional safety guidelines and cytotoxic reagent protocols. Supplier assumes no liability for misuse.




Reviews
There are no reviews yet.