Oxazepam EP Impurity B

About Oxazepam EP Impurity B

Oxazepam EP Impurity B is a pharmacopeial impurity of Oxazepam carrying the CAS registry number 1824-74-4. Formula C17H13ClN2O3, molecular weight 328.7 g/mol. Its systematic (IUPAC) name is (7-chloro-2-oxo-5-phenyl-1,3-dihydro-1,4-benzodiazepin-3-yl) acetate. It is also known as Oxazepam - Impurity B or Oxazepam acetate.

The product is provided as a solid. Reference materials should be stored sealed and away from light and moisture, as specified on the accompanying COA. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

This Oxazepam impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Typical end-use sectors are 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 B
Catalogue No.	VQ-044873
CAS Number	1824-74-4
IUPAC name	(7-chloro-2-oxo-5-phenyl-1,3-dihydro-1,4-benzodiazepin-3-yl) acetate
Molecular formula	C₁₇H₁₃ClN₂O₃
Molecular weight	328.7 g/mol
Exact mass	328.0615
Grade	Reference Standard
HSN code	38229090
InChIKey	FYRWUTOZBRWYCS-UHFFFAOYSA-N
SMILES	CC(=O)OC1C(=O)NC2=C(C=C(C=C2)Cl)C(=N1)C3=CC=CC=C3
PubChem CID	102697

Physical properties
Physical form	Solid
LogP (XLogP3)	3
H-bond donors / acceptors	1 / 4
TPSA	67.8 Å²
Synonyms	3-Acetoxy-7-Chloro-1,3-dihydro-5-phenyl-2H-1,4-benzodiazepin-2-one, Oxazepam - Impurity B, Oxazepam acetate, 7-chloro-2-oxo-5-phenyl-2,3-dihydro-1h-1,4-benzodiazepin-3-yl acetate, Oxazepam 3-acetate, oxazepam-3-acetate, rac-OXA, (+-)-Oxazepam acetate, (+/-)-oxazepam 3-acetate, (+/-)-oxazepam acetate, 7-Chloro-1,3-dihydro-5-phenyl-2-oxo-2H-1,4-benzodiazepin-3-yl acetate, 3-(Acetyloxy)-7-chloro-1,3-dihydro-5-phenyl-2H-1,4-benzodiazepin-2-one

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302Harmful if swallowed
H336May cause drowsiness or dizziness

Precautionary statements: P261, P264, P270, P271, P301 + P317, P304 + P340, P319, P330, 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 B?

The CAS Registry Number of Oxazepam EP Impurity B is 1824-74-4. It is also known as 3-Acetoxy-7-Chloro-1,3-dihydro-5-phenyl-2H-1,4-benzodiazepin-2-one, Oxazepam - Impurity B, Oxazepam acetate.

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

Oxazepam EP Impurity B has the molecular formula C17H13ClN2O3 and a molecular weight of 328.7 g/mol. Its IUPAC name is (7-chloro-2-oxo-5-phenyl-1,3-dihydro-1,4-benzodiazepin-3-yl) acetate.

What is Oxazepam EP Impurity B used for?

Oxazepam EP Impurity B 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 B can I order?

We supply Oxazepam EP Impurity B 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 B?

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

Yes. Oxazepam EP Impurity B 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.