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Pharmacopeial Impurities (EP / USP / BP)

Paclitaxel EP Impurity B

Reference StandardAvailable on request

Order Paclitaxel EP Impurity B (CAS 71610-00-9) online at Zemixal. Request a quote with price, lead time and documents. Catalogue no. ZX-026266.

Pack sizes
Paclitaxel EP Impurity B chemical structure
CAS number71610-00-9
FormulaC45H53NO14
Molar mass831.9 g/mol
Physical formSolid
HS code38229090
InChIKeyDBXFAPJCZABTDR-WBYYIXQISA-N
IUPAC name[(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4,12-diacetyloxy-1,9-dihydroxy-15-[(2R,3S)-2-hydroxy-3-[[(E)-2-methylbut-2-enoyl]amino]-3-phenylpropanoyl]oxy-10,14,17,17-tetramethyl-11-oxo-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate

About Paclitaxel EP Impurity B

Analytical teams working on Paclitaxel use Paclitaxel EP Impurity B as a qualified comparison standard. For your records (Reference Standard), the material is defined by CAS 71610-00-9, formula C45H53NO14 and molar mass 831.9 g/mol. It is handled as a solid.

Where it is used

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Handling and storage

It carries the GHS signal word Danger (H315, H318 and H335), so wear gloves and eye protection and work with good ventilation.

Order it in 10 mg, 25 mg, 50 mg and 100 mg packs or ask for a bulk quotation. Each lot travels with a certificate of analysis with characterisation data. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Paclitaxel

See every impurity, metabolite and related compound we list for this API.

Paclitaxel standards

Typical uses

  • Pharmacopeial method verification
  • Impurity profiling
  • QC release testing
  • ANDA / DMF filings

Applications

Pharmaceutical Manufacturing and QCResearch Labs and Universities

Grade guides

Ph. Eur. Grade (European Pharmacopoeia)

Specifications and identifiers

Specifications of Paclitaxel EP Impurity B
Product namePaclitaxel EP Impurity B
Catalogue numberZX-026266
CAS number71610-00-9
IUPAC name[(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4,12-diacetyloxy-1,9-dihydroxy-15-[(2R,3S)-2-hydroxy-3-[[(E)-2-methylbut-2-enoyl]amino]-3-phenylpropanoyl]oxy-10,14,17,17-tetramethyl-11-oxo-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate
Molecular formulaC45H53NO14
Molar mass831.9 g/mol
Exact mass831.3466
GradeReference Standard
Physical formSolid
XLogP32
H-bond donors / acceptors4 / 14
Topological polar surface area221 Ų
HS code38229090
InChIKeyDBXFAPJCZABTDR-WBYYIXQISA-N
SMILESC/C=C(\C)/C(=O)N[C@@H](C1=CC=CC=C1)[C@H](C(=O)O[C@H]2C[C@]3([C@H]([C@H]4[C@@]([C@H](C[C@@H]5[C@]4(CO5)OC(=O)C)O)(C(=O)[C@@H](C(=C2C)C3(C)C)OC(=O)C)C)OC(=O)C6=CC=CC=C6)O)O
PubChem CID6436208
SynonymsCephalomannine, Paclitaxel - Impurity B, Taxol B, N-Debenzoyl-N-tigloylpaclitaxel, N-Debenzoyl-N-tigloylpaclitaxel (Cephalomannine)

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS05 Corrosive
Corrosive
GHS07 Irritant or harmful
Irritant or harmful

Signal word Danger

  • H315Causes skin irritation
  • H318Causes serious eye damage
  • H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P354 + P338, P317, P319, P321, P332 + P317, P362 + P364, P403 + P233, P405, P501

Classification summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Paclitaxel EP Impurity B
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Paclitaxel EP Impurity B

Which CAS number identifies Paclitaxel EP Impurity B?
Paclitaxel EP Impurity B is registered under CAS 71610-00-9. You may also see it listed as Cephalomannine, Paclitaxel - Impurity B, Taxol B. Our catalogue number for this item is ZX-026266.
What are the formula and molar mass of Paclitaxel EP Impurity B?
For Paclitaxel EP Impurity B, its formula is C45H53NO14 and its molar mass is 831.9 g/mol. InChIKey DBXFAPJCZABTDR-WBYYIXQISA-N lets you match it in any structure database.
How is Paclitaxel EP Impurity B used in pharmaceutical QC?
Paclitaxel EP Impurity B is a characterised reference material linked to Paclitaxel. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Paclitaxel EP Impurity B?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Paclitaxel EP Impurity B?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Paclitaxel EP Impurity B to my country?
Yes. Because Paclitaxel EP Impurity B is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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