Entacapone EP Impurity E

Name: Entacapone EP Impurity E
Brand: Vaqora Chemicals
SKU: VQ-022529

About Entacapone EP Impurity E

Entacapone EP Impurity E (CAS 7659-29-2) is a pharmacopeial impurity of Entacapone offered by Vaqora Chemicals. The compound has the formula C6H4N2O6, corresponding to a molecular weight of 200.11 g/mol. Its systematic (IUPAC) name is 3,5-dinitrobenzene-1,2-diol. Alternative names: Entacapone - Impurity E and 3,5-dinitrocatechol.

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. It carries the GHS signal word “Warning” with 4 hazard statements. Review the Safety Data Sheet before use.

As a characterised impurity of Entacapone, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

Available in 10 mg, 25 mg, 50 mg and 100 mg packs, Entacapone EP Impurity E is dispatched with a Certificate of Analysis (COA) to destinations worldwide.

Typical applications

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

Industries

Related to Entacapone

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

Entacapone impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Entacapone EP Impurity E
Catalogue No.	VQ-022529
CAS Number	7659-29-2
IUPAC name	3,5-dinitrobenzene-1,2-diol
Molecular formula	C₆H₄N₂O₆
Molecular weight	200.11 g/mol
Exact mass	200.0069
Grade	Reference Standard
HSN code	38229090
InChIKey	VDCDWNDTNSWDFJ-UHFFFAOYSA-N
SMILES	C1=C(C=C(C(=C1[N+](=O)[O-])O)O)[N+](=O)[O-]
PubChem CID	3870203

Physical properties
Physical form	Solid
LogP (XLogP3)	0.7
H-bond donors / acceptors	2 / 6
TPSA	132 Å²
Synonyms	Entacapone - Impurity E, 3,5-dinitrocatechol, OR-486, 3,5-Dinitropyrocatechol, 3,5-Dinitro-1,2-benzenediol, OR 486, 1,2-Benzenediol, 3,5-dinitro-, Pyrocatechol, 3,5-dinitro-, 3,5-Dinitrocathecol, 3,5-Dinitrocatechol, solid, (OR-486)

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P330, P332 + P317, P337 + P317, P362 + P364, P403 + P233, P405, P501

Classification is indicative (aggregated GHS notifications) and may vary by grade and concentration. Always refer to the SDS supplied with your lot.

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 Entacapone EP Impurity E?

The CAS Registry Number of Entacapone EP Impurity E is 7659-29-2. It is also known as Entacapone - Impurity E, 3,5-dinitrocatechol, OR-486.

What is the molecular formula and molecular weight of Entacapone EP Impurity E?

Entacapone EP Impurity E has the molecular formula C6H4N2O6 and a molecular weight of 200.11 g/mol. Its IUPAC name is 3,5-dinitrobenzene-1,2-diol.

What is Entacapone EP Impurity E used for?

Entacapone EP Impurity E is supplied as a characterised reference material related to Entacapone. 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 Entacapone EP Impurity E can I order?

We supply Entacapone EP Impurity E 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 Entacapone EP Impurity E?

Yes. Every lot of Entacapone EP Impurity E 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 Entacapone EP Impurity E be shipped internationally?

Yes. Entacapone EP Impurity E is classified as hazardous, so it is packed in UN-approved packaging and shipped as dangerous goods under IATA/IMDG rules. We export worldwide on EXW, FOB, CIF and DAP terms.