PBT Impurity 1

Name: PBT Impurity 1
Brand: Vaqora Chemicals
SKU: VQ-035375

About PBT Impurity 1

Listed under CAS 210566-87-3, PBT Impurity 1 is a metabolite or degradation product of Terephthalic acid available from Vaqora Chemicals. The compound has the formula C24H26O9, corresponding to a molecular weight of 458.5 g/mol. The IUPAC name is 4-[4-[4-(4-hydroxybutoxycarbonyl)benzoyl]oxybutoxycarbonyl]benzoic acid. It is also known as Linear PBT Dimer.

It is supplied as a solid. Store the standard in its sealed vial, protected from light and moisture, and follow the storage condition printed on the COA. 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.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, PBT Impurity 1 is dispatched with a Certificate of Analysis (COA) to destinations 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	PBT Impurity 1
Catalogue No.	VQ-035375
CAS Number	210566-87-3
IUPAC name	4-[4-[4-(4-hydroxybutoxycarbonyl)benzoyl]oxybutoxycarbonyl]benzoic acid
Molecular formula	C₂₄H₂₆O₉
Molecular weight	458.5 g/mol
Exact mass	458.1577
Grade	Reference Standard
HSN code	38229090
InChIKey	BKEHTHXBXZNSIH-UHFFFAOYSA-N
SMILES	C1=CC(=CC=C1C(=O)O)C(=O)OCCCCOC(=O)C2=CC=C(C=C2)C(=O)OCCCCO
PubChem CID	71943

Physical properties
Physical form	Solid
LogP (XLogP3)	3.4
H-bond donors / acceptors	2 / 9
TPSA	136 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 PBT Impurity 1?

The CAS Registry Number of PBT Impurity 1 is 210566-87-3. It is also known as 4-{[4-({4-[(4-hydroxybutoxy)carbonyl]benzoyl}oxy)butoxy]carbonyl}benzoic acid, 4-((4-((4-((4-Hydroxybutoxy)carbonyl)benzoyl)oxy)butoxy)carbonyl)benzoic acid, 4-[(4-Carboxybenzoyl)oxy]butyl-4-hydroxybutyl Ester 1,4-Benzenedicarboxylic Acid.

What is the molecular formula and molecular weight of PBT Impurity 1?

PBT Impurity 1 has the molecular formula C24H26O9 and a molecular weight of 458.5 g/mol. Its IUPAC name is 4-[4-[4-(4-hydroxybutoxycarbonyl)benzoyl]oxybutoxycarbonyl]benzoic acid.

What is PBT Impurity 1 used for?

PBT Impurity 1 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 PBT Impurity 1 can I order?

We supply PBT Impurity 1 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 PBT Impurity 1?

Yes. Every lot of PBT Impurity 1 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 PBT Impurity 1 be shipped internationally?

Yes. We export PBT Impurity 1 worldwide by air and sea freight or express courier, on EXW, FOB, CIF, CFR or DAP Incoterms, with full export documentation.