Atovaquone EP Impurity B

Name: Atovaquone EP Impurity B
Brand: Vaqora Chemicals
SKU: VQ-028813

About Atovaquone EP Impurity B

Vaqora Chemicals supplies Atovaquone EP Impurity B, a pharmacopeial impurity of Atovaquone registered under CAS number 137732-39-9. Its molecular formula is C22H19ClO3 and its molecular weight is 366.8 g/mol. Systematically, it is named 3-[4-(4-chlorophenyl)cyclohexyl]-4-hydroxynaphthalene-1,2-dione. Common synonyms include Atovaquone - Impurity B and Atovaquone Related Compound A.

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. It carries the GHS signal word “Warning” with 3 hazard statements. Review the Safety Data Sheet before use.

This Atovaquone impurity supports analytical method development and validation (AMV), batch release testing and the impurity sections of ANDA and DMF filings. Buyers come mainly from pharmaceutical manufacturing and academic and industrial research.

We offer Atovaquone EP Impurity B in 10 mg, 25 mg, 50 mg and 100 mg packs with a batch-specific COA, and ship to customers worldwide.

Typical applications

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

Industries

Related to Atovaquone

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

Atovaquone impurities

Grade guides

Specifications & identifiers

Chemical identifiers
Product name	Atovaquone EP Impurity B
Catalogue No.	VQ-028813
CAS Number	137732-39-9
IUPAC name	3-[4-(4-chlorophenyl)cyclohexyl]-4-hydroxynaphthalene-1,2-dione
Molecular formula	C₂₂H₁₉ClO₃
Molecular weight	366.8 g/mol
Exact mass	366.1023
Grade	Reference Standard
HSN code	38229090
InChIKey	BSJMWHQBCZFXBR-UHFFFAOYSA-N
SMILES	C1CC(CCC1C2=CC=C(C=C2)Cl)C3=C(C4=CC=CC=C4C(=O)C3=O)O
PubChem CID	74989

Physical properties
Physical form	Solid
LogP (XLogP3)	5.2
H-bond donors / acceptors	1 / 3
TPSA	54.4 Å²
Synonyms	Atovaquone - Impurity B, Atovaquone Related Compound A, 3-(4-(4-chlorophenyl)cyclohexyl)-4-hydroxynaphthalene-1,2-dione, Wellvone, cis-Atovaquone, Atavaquone, Mepron (antipneumocystic), BW 566C, 2-(trans-4-(p-Chlorophenyl)cyclohexyl)-3-hydroxy-1,4-naphthoquinone, 2-[trans-4-(4-chlorophenyl)cyclohexyl]-3-hydroxy-1,4-naphthoquinone, 2-((1r,4r)-4-(4-chlorophenyl)cyclohexyl)-3-hydroxynaphthalene-1,4-dione, 2-(4-(4-Chlorophenyl)cyclohexyl)-3-hydroxynaphthalene-1,4-dione

Safety & hazard information (GHS)

Harmful / irritant

Signal word: Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements: P261, P264, P264 + P265, P271, P280, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, 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 Atovaquone EP Impurity B?

The CAS Registry Number of Atovaquone EP Impurity B is 137732-39-9. It is also known as Atovaquone - Impurity B, Atovaquone Related Compound A, 3-(4-(4-chlorophenyl)cyclohexyl)-4-hydroxynaphthalene-1,2-dione.

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

Atovaquone EP Impurity B has the molecular formula C22H19ClO3 and a molecular weight of 366.8 g/mol. Its IUPAC name is 3-[4-(4-chlorophenyl)cyclohexyl]-4-hydroxynaphthalene-1,2-dione.

What is Atovaquone EP Impurity B used for?

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

We supply Atovaquone 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 Atovaquone EP Impurity B?

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

Yes. Atovaquone 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.