CompoundList

Protaxel

Also known as Paclitaxel Ceribate, 7-(2'',3''-dihydroxypropyl carbonoxy)paclitaxel, Ceribate de paclitaxel

CAS 186040-50-6Formula C51H57NO18Molar mass 972.01 g/mol
Protaxel chemical structure, C51H57NO18, CAS 186040-50-6
2D chemical structure

Key facts

What buyers check first

CAS number
186040-50-6
Formula
C51H57NO18
Molar mass
972.01 g/mol
HS code
293299
Category
Heterocyclic compounds

What is Protaxel?

Plain description, key identifiers and synonyms

Paclitaxel Ceribate is the ceribate ester form of paclitaxel, a compound extracted from the Pacific yew tree Taxus brevifolia with antineoplastic activity. Paclitaxel binds to and stabilizes tubulin thereby inhibiting the disassembly of microtubules, resulting in the inhibition of cell division. This agent also induces apoptosis by binding to and blocking the function of the apoptosis inhibitor protein B-cell Leukemia 2 (BCL2).

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
[(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4,12-diacetyloxy-15-[(2R,3S)-3-benzamido-2-hydroxy-3-phenylpropanoyl]oxy-9-(2,3-dihydroxypropoxycarbonyloxy)-1-hydroxy-10,14,17,17-tetramethyl-11-oxo-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate
CAS number
186040-50-6
Molecular formula
C51H57NO18
UNII
B3C86E80A0
InChIKey
HSUDWURBWSUCOB-JPHWUADUSA-N
InChI
InChI=1S/C51H57NO18/c1-27-34(67-46(61)39(57)38(30-16-10-7-11-17-30)52-44(59)31-18-12-8-13-19-31)23-51(63)43(69-45(60)32-20-14-9-15-21-32)41-49(6,42(58)40(66-28(2)54)37(27)48(51,4)5)35(68-47(62)64-25-33(56)24-53)22-36-50(41,26-65-36)70-29(3)55/h7-21,33-36,38-41,43,53,56-57,63H,22-26H2,1-6H3,(H,52,59)/t33?,34-,35-,36+,38-,39+,40+,41-,43-,49+,50-,51+/m0/s1
Canonical SMILES
CC(=O)OC1C(=O)C2(C)C(OC(=O)OCC(O)CO)CC3OCC3(OC(C)=O)C2C(OC(=O)c2ccccc2)C2(O)CC(OC(=O)C(O)C(NC(=O)c3ccccc3)c3ccccc3)C(C)=C1C2(C)C
Isomeric SMILES
CC1=C2[C@H](C(=O)[C@@]3([C@H](C[C@@H]4[C@]([C@H]3[C@@H]([C@@](C2(C)C)(C[C@@H]1OC(=O)[C@@H]([C@H](C5=CC=CC=C5)NC(=O)C6=CC=CC=C6)O)O)OC(=O)C7=CC=CC=C7)(CO4)OC(=O)C)OC(=O)OCC(CO)O)C)OC(=O)C

Synonyms

  • Paclitaxel Ceribate
  • 7-(2'',3''-dihydroxypropyl carbonoxy)paclitaxel
  • Ceribate de paclitaxel
  • Ceribato de paclitaxel

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
972.01 g/molcalc.
Exact mass
971.3576 Dacalc.
LogP (octanol/water)
3.25calc.
Topological polar surface area
277.1 Ųcalc.
Hydrogen bond donors
5calc.
Hydrogen bond acceptors
18calc.
Rotatable bonds
14calc.
Heavy atoms
70calc.
Rings
7calc.
Aromatic rings
3calc.
Fraction sp3 carbons
0.47calc.
Formal charge
0calc.
Stereocentres
12calc.
Lipinski rule of five
Fails (2 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, O=C(CC(NC(=O)c1ccccc1)c1ccccc1)OC1C=C2CC(=O)C3CCC4OCC4C3C(OC(=O)c3ccccc3)C(C2)C1

O=C(CC(NC(=O)c1ccccc1)c1ccccc1)OC1C=C2CC(=O)C3CCC4OCC4C3C(OC(=O)c3ccccc3)C(C2)C1

7 rings, 47 atoms.

87 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Protaxel suppliers

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Protaxel price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Applications are not documented for this substance yet. Suppliers often describe uses on their product pages, linked in the suppliers list above.

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Protaxel is traded under.

HS 2932.99Indicative HS code

Heterocyclic compounds with oxygen hetero-atom(s) only, other

World exports in 2024
$3.81B
+10.3% vs 2023, imports $7.05B
2019 to 2024
Top exporters
  1. China28.9%
  2. Switzerland * partner reported12.7%
  3. Germany7.8%
Top importers
  1. United States49.7%
  2. China11.9%
  3. India * partner reported3.3%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Protaxel is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Protaxel, based on the data on this page

What is Protaxel?

Paclitaxel Ceribate is the ceribate ester form of paclitaxel, a compound extracted from the Pacific yew tree Taxus brevifolia with antineoplastic activity. Paclitaxel binds to and stabilizes tubulin thereby inhibiting the disassembly of microtubules, resulting in the inhibition of cell division.

What is the CAS number of Protaxel?

The CAS registry number of Protaxel is 186040-50-6.

What is the molecular formula and weight of Protaxel?

The molecular formula of Protaxel is C51H57NO18 and its molar mass is 972.01 g/mol.

Is Protaxel hazardous?

No GHS hazard classification for Protaxel is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Protaxel?

Protaxel is usually classified under HS code 293299 (Heterocyclic compounds with oxygen hetero-atom(s) only, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Protaxel?

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What is the price of Protaxel?

Suppliers quote Protaxel on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Protaxel

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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