Oxazepam EP Impurity A

About Oxazepam EP Impurity A

Oxazepam EP Impurity A is a pharmacopeial impurity of Oxazepam carrying the CAS registry number 19554-95-1. The compound has the formula C15H11ClN2O2, corresponding to a molecular weight of 286.71 g/mol. The IUPAC name is 7-chloro-5-phenyl-4,5-dihydro-1H-1,4-benzodiazepine-2,3-dione. Alternative names: Oxazepam - Impurity A and 3-Dehydroxy-3-oxo-4,5-dihydro Oxazepam.

The product is provided as a solid. Keep the vial tightly closed, protected from light and humidity, at the temperature stated on the Certificate of Analysis. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

As a characterised impurity of Oxazepam, it is used for analytical method development, method validation (AMV) and routine quality-control testing, and it supports ANDA and DMF regulatory filings. 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

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

Industries

Related to Oxazepam

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

Oxazepam impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Oxazepam EP Impurity A
Catalogue No.	VQ-044855
CAS Number	19554-95-1
IUPAC name	7-chloro-5-phenyl-4,5-dihydro-1H-1,4-benzodiazepine-2,3-dione
Molecular formula	C₁₅H₁₁ClN₂O₂
Molecular weight	286.71 g/mol
Exact mass	286.0509
Grade	Reference Standard
HSN code	38229090
InChIKey	ZPRNOXLABKLWNP-UHFFFAOYSA-N
SMILES	C1=CC=C(C=C1)C2C3=C(C=CC(=C3)Cl)NC(=O)C(=O)N2
PubChem CID	4196951

Physical properties
Physical form	Solid
LogP (XLogP3)	2.7
H-bond donors / acceptors	2 / 2
TPSA	58.2 Å²
Synonyms	Oxazepam - Impurity A, 3-Dehydroxy-3-oxo-4,5-dihydro Oxazepam, 1H-1,4-Benzodiazepine-2,3-dione, 7-chloro-4,5-dihydro-5-phenyl-, (5RS)-7-Chloro-5-phenyl-4,5-dihydro-1H-1,4-benzodiazepine-2,3-dione, Oxazepam specified impurity A, (+/-)-3-Dehydroxy-3-oxo-4,5-dihydro oxazepam, 7-chloro-4,5-dihydro-5-phenyl-1H-1,4-Benzodiazepine-2,3-dione, (5RS)-7-chloro-5-phenyl-4,5-dihydro-1H-1,4- benzodiazepine-2,3-dione, 7-chloro-5-phenyl-1H,4H,5H-benzo[f]1,4-diazaperhydroepine-2,3-dione

Safety & hazard information (GHS)

Harmful / irritant

Health hazard

Signal word: Warning

Hazard statements

H336May cause drowsiness or dizziness
H351Suspected of causing cancer

Precautionary statements: P203, P261, P271, P280, P304 + P340, P318, P319, 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 Oxazepam EP Impurity A?

The CAS Registry Number of Oxazepam EP Impurity A is 19554-95-1. It is also known as Oxazepam - Impurity A, 3-Dehydroxy-3-oxo-4,5-dihydro Oxazepam, 1H-1,4-Benzodiazepine-2,3-dione, 7-chloro-4,5-dihydro-5-phenyl-.

What is the molecular formula and molecular weight of Oxazepam EP Impurity A?

Oxazepam EP Impurity A has the molecular formula C15H11ClN2O2 and a molecular weight of 286.71 g/mol. Its IUPAC name is 7-chloro-5-phenyl-4,5-dihydro-1H-1,4-benzodiazepine-2,3-dione.

What is Oxazepam EP Impurity A used for?

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

We supply Oxazepam EP Impurity A 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 Oxazepam EP Impurity A?

Yes. Every lot of Oxazepam EP Impurity A 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 Oxazepam EP Impurity A be shipped internationally?

Yes. Oxazepam EP Impurity A 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.