Azelastine EP Impurity D

Name: Azelastine EP Impurity D
Brand: Vaqora Chemicals
SKU: VQ-021702

About Azelastine EP Impurity D

Listed under CAS 53242-88-9, Azelastine EP Impurity D is a pharmacopeial impurity of Azelastine available from Vaqora Chemicals. With the molecular formula C15H11ClN2O, it has a molar mass of 270.71 g/mol. The IUPAC name is 4-[(4-chlorophenyl)methyl]-2H-phthalazin-1-one. It is also known as Azelastine - Impurity D or 4-(4-chlorobenzyl)phthalazin-1(2H)-one.

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. The GHS classification uses the signal word “Warning”, so appropriate gloves, eye protection and ventilation are recommended.

As a characterised impurity of Azelastine, 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.

Vaqora Chemicals supplies Azelastine EP Impurity D in 10 mg, 25 mg, 50 mg and 100 mg packs, each shipped with a Certificate of Analysis (COA), and exports worldwide.

Typical applications

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

Industries

Related to Azelastine

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

Azelastine impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Azelastine EP Impurity D
Catalogue No.	VQ-021702
CAS Number	53242-88-9
IUPAC name	4-[(4-chlorophenyl)methyl]-2H-phthalazin-1-one
Molecular formula	C₁₅H₁₁ClN₂O
Molecular weight	270.71 g/mol
Exact mass	270.056
Grade	Reference Standard
HSN code	38229090
InChIKey	NLXGCQIEVZYDRS-UHFFFAOYSA-N
SMILES	C1=CC=C2C(=C1)C(=NNC2=O)CC3=CC=C(C=C3)Cl
PubChem CID	104452

Physical properties
Physical form	Solid
LogP (XLogP3)	3.2
H-bond donors / acceptors	1 / 2
TPSA	41.5 Å²
Synonyms	Azelastine - Impurity D, Azelastine EP Impurity D, azelastine USP rc d, 4-(4-chlorobenzyl)phthalazin-1(2H)-one, 4-(4-chlorobenzyl)-1(2H)-phthalazinone, 4-[(4-Chlorophenyl)methyl]-1(2H)-phthalazinone, 1(2H)-Phthalazinone, 4-((4-chlorophenyl)methyl)-, 1(2H)-Phthalazinone, 4-[(4-chlorophenyl)methyl]-, 4-{[4-chlorophenyl]methyl}-1(2H)-phthalazinone, 4-(4-Chloro-benzyl)-2H-phthalazin-1-one, 4-(4-chlorobenzyl)phthalazin-1-ol, 4-((4-Chlorophenyl)methyl)phthalazin-1(2H)-one

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H302+H312+H332Harmful if swallowed, in contact with skin or if inhaled
H302Harmful if swallowed
H312Harmful in contact with skin
H315Causes skin irritation
H332Harmful if inhaled
H335May cause respiratory irritation

Precautionary statements: P261, P264, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P317, P319, P321, P330, P332 + 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 Azelastine EP Impurity D?

The CAS Registry Number of Azelastine EP Impurity D is 53242-88-9. It is also known as Azelastine - Impurity D, Azelastine EP Impurity D, azelastine USP rc d.

What is the molecular formula and molecular weight of Azelastine EP Impurity D?

Azelastine EP Impurity D has the molecular formula C15H11ClN2O and a molecular weight of 270.71 g/mol. Its IUPAC name is 4-[(4-chlorophenyl)methyl]-2H-phthalazin-1-one.

What is Azelastine EP Impurity D used for?

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

We supply Azelastine EP Impurity D 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 Azelastine EP Impurity D?

Yes. Every lot of Azelastine EP Impurity D 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 Azelastine EP Impurity D be shipped internationally?

Yes. Azelastine EP Impurity D 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.