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from Taxus brevifolia, ≥95% (HPLC), powder

Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level

biological source

Taxus brevifolia


≥95% (HPLC)






213 °C (dec.) (lit.)


DMSO: 50 mg/mL (can be stored frozen for several months)
methanol: soluble 50 mg/mL, clear, colorless (undergoes transesterification)
ethanol: soluble

Mode of action

DNA synthesis | interferes

antibiotic activity spectrum



Bristol-Myers Squibb

storage temp.


SMILES string




InChI key


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General description

Chemical structure: taxoide


Paclitaxel has been used as a component of the dechorionation buffer for Gryllus bimaculatus eggs. Paclitaxel has also been used for studying its effect on the movement of all-trans retinoic acid (ATRA) differentiated NB4 cells.


1, 5, 25 mg in glass insert
Bottomless glass bottle. Contents are inside inserted fused cone.

Biochem/physiol Actions

Paclitaxel is a potent anti-neoplastic and anti-mitotic taxane drug, which binds to the N-terminus of β-tubulin and and stabilizes microtubules arresting the cell cycle at the G2/M phase. The microtubule damage induces apoptosis through a JNK-dependent pathway followed by a JNK-independent pathway, perhaps related to the activation of protein kinase A (PKA) or of Raf-1 kinase, resulting in phosphorylation of Bcl-2. A major metabolite via CYP2CB is 6α-hydroxypaclitaxel (6α-OHP).

Features and Benefits

This compound was developed by Bristol-Myers Squibb. To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.
This compound is a featured product for ADME Tox research. Click here to discover more featured ADME Tox products. Learn more about bioactive small molecules for other areas of research at


Paclitaxel undergoes transesterification in methanol and hydrolyzes in aqueous solutions.

Preparation Note

Paclitaxel is soluble in methanol at 50 mg/ml and yields a clear, colorless solution. It is also soluble in DMSO (50 mg/ml) and ethanol.

Signal Word


Hazard Classifications

Eye Dam. 1 - Muta. 1A - Repr. 1A - Resp. Sens. 1 - Skin Irrit. 2 - Skin Sens. 1 - STOT RE 1 - STOT SE 2 - STOT SE 3

Target Organs

Respiratory system

Storage Class Code

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects



Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Certificate of Origin

Isao Sarashina et al.
Development, growth & differentiation, 47(2), 99-108 (2005-03-18)
Early embryogenesis of the two-spotted cricket Gryllus bimaculatus was examined by scanning electron microscopy and several fluorescence staining methods, with special reference to these four issues: (i) the location of micropyles; (ii) the transfer of the female pronucleus following meiosis;
Barbara T McGrogan et al.
Biochimica et biophysica acta, 1785(2), 96-132 (2007-12-11)
The taxanes, paclitaxel and docetaxel are microtubule-stabilizing agents that function primarily by interfering with spindle microtubule dynamics causing cell cycle arrest and apoptosis. However, the mechanisms underlying their action have yet to be fully elucidated. These agents have become widely
Karl-Heinz Altmann et al.
Natural product reports, 24(2), 327-357 (2007-03-29)
This review article provides an overview on the current state of research in the area of microtubule-stabilizing agents from natural sources, with a primary focus on the biochemistry, biology, and pharmacology associated with these compounds. A variety of natural products
Joakim da Silva et al.
Biomaterials, 31(8), 2201-2208 (2009-12-18)
Whilst rigid, planar surfaces are often used to study cell migration, a physiological scenario requires three-dimensional (3D) scaffolds with tissue-like stiffness. This paper presents a method for fabricating periodic hydrogel scaffolds with a 3D honeycomb-like structure from colloidal crystal templates.
Jie Liu et al.
The Journal of biological chemistry, 285(27), 20904-20914 (2010-05-05)
The human mixed lineage leukemia-5 (MLL5) gene is frequently deleted in myeloid malignancies. Emerging evidence suggests that MLL5 has important functions in adult hematopoiesis and the chromatin regulatory network, and it participates in regulating the cell cycle machinery. Here, we


Fluorescent Live Cell Imaging of Cytoskeleton Structure Proteins using LentiBrite™ Lentiviral Biosensors

High titer lentiviral particles including beta-actin, alpha-tubulin and vimentin used for live cell analysis of cytoskeleton structure proteins.

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