Polybutylene terephthalate Impurity 2

Name: Polybutylene terephthalate Impurity 2
Brand: Vaqora Chemicals
SKU: VQ-028290

About Polybutylene terephthalate Impurity 2

Polybutylene terephthalate Impurity 2 (CAS 210566-88-4) is a metabolite or degradation product of Terephthalic acid offered by Vaqora Chemicals. The compound has the formula C36H38O13, corresponding to a molecular weight of 678.7 g/mol. Systematically, it is named 4-[4-[4-[4-[4-(4-hydroxybutoxycarbonyl)benzoyl]oxybutoxycarbonyl]benzoyl]oxybutoxycarbonyl]benzoic acid. It is also known as Linear PBT Trimer or Cyclic PBT Trimer.

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. Good laboratory practice and suitable PPE are recommended during handling.

It is used in metabolite identification, stability-indicating method development and impurity profiling of Terephthalic acid, as well as in QC testing and ANDA/DMF documentation. It is used across pharmaceutical manufacturing and academic and industrial research.

Standard pack sizes are 10 mg, 25 mg, 50 mg and 100 mg, and every batch ships with a Certificate of Analysis (COA) and we export worldwide.

Typical applications

Metabolite identification
Stability-indicating methods
Impurity profiling

Industries

Related to Terephthalic acid

View every impurity, metabolite and intermediate we list for Terephthalic acid.

Terephthalic acid impurities

Specifications & identifiers

Chemical identifiers
Product name	Polybutylene terephthalate Impurity 2
Catalogue No.	VQ-028290
CAS Number	210566-88-4
IUPAC name	4-[4-[4-[4-[4-(4-hydroxybutoxycarbonyl)benzoyl]oxybutoxycarbonyl]benzoyl]oxybutoxycarbonyl]benzoic acid
Molecular formula	C₃₆H₃₈O₁₃
Molecular weight	678.7 g/mol
Exact mass	678.2312
Grade	Reference Standard
HSN code	38229090
InChIKey	AIWZIHMYQSGKIY-UHFFFAOYSA-N
SMILES	C1=CC(=CC=C1C(=O)O)C(=O)OCCCCOC(=O)C2=CC=C(C=C2)C(=O)OCCCCOC(=O)C3=CC=C(C=C3)C(=O)OCCCCO
PubChem CID	171370731

Physical properties
Physical form	Solid
LogP (XLogP3)	5.6
H-bond donors / acceptors	2 / 13
TPSA	189 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 Polybutylene terephthalate Impurity 2?

The CAS Registry Number of Polybutylene terephthalate Impurity 2 is 210566-88-4. It is also known as Linear PBT Trimer, Cyclic PBT Trimer, PBT Impurity 58.

What is the molecular formula and molecular weight of Polybutylene terephthalate Impurity 2?

Polybutylene terephthalate Impurity 2 has the molecular formula C36H38O13 and a molecular weight of 678.7 g/mol. Its IUPAC name is 4-[4-[4-[4-[4-(4-hydroxybutoxycarbonyl)benzoyl]oxybutoxycarbonyl]benzoyl]oxybutoxycarbonyl]benzoic acid.

What is Polybutylene terephthalate Impurity 2 used for?

Polybutylene terephthalate Impurity 2 is supplied as a characterised reference material related to Terephthalic acid. 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 Polybutylene terephthalate Impurity 2 can I order?

We supply Polybutylene terephthalate Impurity 2 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 Polybutylene terephthalate Impurity 2?

Yes. Every lot of Polybutylene terephthalate Impurity 2 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 Polybutylene terephthalate Impurity 2 be shipped internationally?

Yes. We export Polybutylene terephthalate Impurity 2 worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.