13-O-(Triethylsilyl) Baccatin III

Name: 13-O-(Triethylsilyl) Baccatin III
Brand: Vaqora Chemicals
SKU: VQ-023454

About 13-O-(Triethylsilyl) Baccatin III

Vaqora Chemicals supplies 13-O-(Triethylsilyl) Baccatin III, an impurity of Paclitaxel registered under CAS number 208406-86-4. The compound has the formula C37H52O11Si, corresponding to a molecular weight of 700.9 g/mol. Common synonyms include Paclitaxel 13-Tes-Baccatin III and 13-TES-Baccatin III.

It is supplied as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. Handle it with standard laboratory precautions and appropriate personal protective equipment.

Pharmaceutical QC and development laboratories use this impurity standard of Paclitaxel to develop and validate HPLC methods, to set specification limits and to document impurity profiles in ANDA and DMF submissions. Typical end-use sectors are pharmaceutical manufacturing and academic and industrial research.

Vaqora Chemicals supplies 13-O-(Triethylsilyl) Baccatin III in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

Analytical method development
Method validation (AMV)
QC release testing
ANDA / DMF filings

Industries

Related to Paclitaxel

View every impurity, metabolite and intermediate we list for Paclitaxel.

Paclitaxel impurities

Specifications & identifiers

Chemical identifiers
Product name	13-O-(Triethylsilyl) Baccatin III
Catalogue No.	VQ-023454
CAS Number	208406-86-4
IUPAC name	[(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4,12-diacetyloxy-1,9-dihydroxy-10,14,17,17-tetramethyl-11-oxo-15-triethylsilyloxy-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate
Molecular formula	C₃₇H₅₂O₁₁Si
Molecular weight	700.9 g/mol
Exact mass	700.3279
Grade	Reference Standard
HSN code	38229090
InChIKey	NKNHZPLYHAABLP-UZBMNOCMSA-N
SMILES	CC[Si](CC)(CC)O[C@H]1C[C@]2([C@H]([C@H]3[C@@]([C@H](C[C@@H]4[C@]3(CO4)OC(=O)C)O)(C(=O)[C@@H](C(=C1C)C2(C)C)OC(=O)C)C)OC(=O)C5=CC=CC=C5)O
PubChem CID	71752652

Physical properties
Physical form	Solid
H-bond donors / acceptors	2 / 11
TPSA	155 Å²

Documents

Safety Data Sheet (SDS)16-section GHS · on request Certificate of AnalysisTypical / batch COA · on request Specification sheetTDS / MOA · on request

Frequently asked questions

What is the CAS number of 13-O-(Triethylsilyl) Baccatin III?

The CAS Registry Number of 13-O-(Triethylsilyl) Baccatin III is 208406-86-4. It is also known as Paclitaxel 13-Tes-Baccatin III, 13-TES-Baccatin III.

What is the molecular formula and molecular weight of 13-O-(Triethylsilyl) Baccatin III?

13-O-(Triethylsilyl) Baccatin III has the molecular formula C37H52O11Si and a molecular weight of 700.9 g/mol.

What is 13-O-(Triethylsilyl) Baccatin III used for?

13-O-(Triethylsilyl) Baccatin III is supplied as a characterised reference material related to Paclitaxel. It is used for analytical method development and validation (AMV), impurity profiling, stability studies and quality control, and in ANDA/DMF regulatory filings.

Which grade and pack sizes of 13-O-(Triethylsilyl) Baccatin III can I order?

We supply 13-O-(Triethylsilyl) Baccatin III in Reference Standard grade, in 10 mg, 25 mg, 50 mg, 100 mg packs. Larger bulk quantities and custom packing are quoted on request.

Do you provide a COA and SDS with 13-O-(Triethylsilyl) Baccatin III?

Yes. Every lot of 13-O-(Triethylsilyl) Baccatin III is shipped with a batch-specific Certificate of Analysis, and a 16-section GHS Safety Data Sheet is provided with the quotation and the shipment.

Can 13-O-(Triethylsilyl) Baccatin III be shipped internationally?

Yes. We export 13-O-(Triethylsilyl) Baccatin III worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.