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API Impurities

Naproxen Impurity H

Reference StandardIn stock

Order Naproxen Impurity H (CAS 5111-66-0) online at Zemixal. Request a quote with price, lead time and documents. Packs from 10 mg.

Pack sizes
Naproxen Impurity H chemical structure
CAS number5111-66-0
FormulaC11H10O2
Molar mass174.2 g/mol
Physical formSolid
HS code38229090
InChIKeyWWPKRXOOVICNJY-UHFFFAOYSA-N
IUPAC name6-methoxynaphthalen-2-ol

About Naproxen Impurity H

Zemixal lists Naproxen Impurity H for laboratories that identify, quantify or control Naproxen and its related substances. Key data (Reference Standard): CAS 5111-66-0, formula C11H10O2 and molar mass 174.2 g/mol. It is handled as a solid.

Use cases we see most often

  • Analytical method development
  • Method validation (AMV)
  • QC release testing
  • ANDA / DMF filings

Safe handling

Classified under GHS with signal word Warning and hazard statements H315, H319 and H335. Read the SDS before first use.

Available as 10 mg, 25 mg, 50 mg, 100 mg and 250 mg. Larger or split packs can be arranged. Every shipment includes a certificate of analysis with characterisation data. Add it to your quote list and our team replies with price, lead time and shipping options within one business day.

Reference standards for Naproxen

See every impurity, metabolite and related compound we list for this API.

Naproxen standards

Typical uses

  • Analytical method development
  • Method validation (AMV)
  • QC release testing
  • ANDA / DMF filings

Applications

Specifications and identifiers

Specifications of Naproxen Impurity H
Product nameNaproxen Impurity H
Catalogue numberZX-004977
CAS number5111-66-0
IUPAC name6-methoxynaphthalen-2-ol
Molecular formulaC11H10O2
Molar mass174.2 g/mol
Exact mass174.0681
GradeReference Standard
Physical formSolid
XLogP33.1
H-bond donors / acceptors1 / 2
Topological polar surface area29.5 Ų
HS code38229090
InChIKeyWWPKRXOOVICNJY-UHFFFAOYSA-N
SMILESCOC1=CC2=C(C=C1)C=C(C=C2)O
PubChem CID288634
SynonymsHydroxynerolin, 2-Hydroxy-6-methoxynaphthalene, 2-Methoxy-6-naphthol, 6-Methoxy-2-naphthalenol, 6-Methoxy-2-hydroxynaphthalene, 6- Methoxy-2-naphthol, 6-Methoxy-beta-naphthol, 6-Methoxy-2-naphthol, Naproxen sodium impurity H, 2-Naphthalenol, 6-methoxy-, Naproxen EP Impurity H, 6-methoxy-naphthalen-2-ol

Lot values are stated on the batch certificate of analysis. Ask for a typical COA with your quotation.

Safety and GHS hazards

GHS07 Irritant or harmful
Irritant or harmful

Signal word Warning

  • 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 summarised from public GHS notifications. It can vary with grade and concentration, so always follow the SDS supplied with your lot.

Pack sizes

Pack sizes of Naproxen Impurity H
10 mgQuoted on request
25 mgQuoted on request
50 mgQuoted on request
100 mgQuoted on request
250 mgQuoted on request

Need a different size? Bulk drums and custom packing are quoted on request through the quote form on this page.

Questions about Naproxen Impurity H

Which CAS number identifies Naproxen Impurity H?
Naproxen Impurity H is registered under CAS 5111-66-0. You may also see it listed as Hydroxynerolin, 2-Hydroxy-6-methoxynaphthalene, 2-Methoxy-6-naphthol. Our catalogue number for this item is ZX-004977.
What are the formula and molar mass of Naproxen Impurity H?
For Naproxen Impurity H, its formula is C11H10O2 and its molar mass is 174.2 g/mol. The systematic (IUPAC) name is 6-methoxynaphthalen-2-ol. InChIKey WWPKRXOOVICNJY-UHFFFAOYSA-N lets you match it in any structure database.
How is Naproxen Impurity H used in pharmaceutical QC?
Naproxen Impurity H is a characterised reference material linked to Naproxen. Laboratories use it to identify and quantify this impurity during method development and validation, stability work, batch release testing and regulatory submissions.
What grade and pack sizes are available for Naproxen Impurity H?
This listing is Reference Standard grade. Standard packs are 10 mg, 25 mg, 50 mg, 100 mg, 250 mg. Larger quantities and custom packing can be quoted on request.
Which documents come with Naproxen Impurity H?
Each lot ships with a batch certificate of analysis and a 16-section GHS safety data sheet. A typical COA or specification sheet can be shared with the quotation before you order.
Can Zemixal ship Naproxen Impurity H to my country?
Yes. Because Naproxen Impurity H is classed as hazardous, it travels in UN-approved packaging as dangerous goods under IATA or IMDG rules, with the export paperwork your broker needs.

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