Naproxen Impurity I

Name: Naproxen Impurity I
Brand: Zemixal
SKU: ZX-004978

Reference StandardIn stock

Naproxen Impurity I (CAS 23981-47-7) supplier Zemixal. Lab and bulk packs, batch COA, fast global delivery. Purity 96%. Packs from 10 mg.

Pack sizes

CAS number23981-47-7

FormulaC₁₃H₁₂O₃

Molar mass216.23 g/mol

Physical formSolid

HS code38229090

Purity96%

InChIKeyPHJFLPMVEFKEPL-UHFFFAOYSA-N

IUPAC name2-(6-methoxynaphthalen-2-yl)acetic acid

About Naproxen Impurity I

Zemixal lists Naproxen Impurity I for laboratories that identify, quantify or control Naproxen and its related substances. For your records (Reference Standard), the material is defined by CAS 23981-47-7, formula C13H12O3 and molar mass 216.23 g/mol. It is handled as a solid.

Common uses in the lab and plant

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

Safe handling

It carries the GHS signal word Warning (H302, H315, H319 and H335), so wear gloves and eye protection and work with good ventilation.

Available as 10 mg, 25 mg, 50 mg, 100 mg and 250 mg. Larger or split packs can be arranged. You receive a certificate of analysis with characterisation data with each order. Send an enquiry through the quote panel and you get a formal offer with Incoterms and delivery time.

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

Pharmaceutical Manufacturing and QC Research Labs and Universities

Specifications and identifiers

Specifications of Naproxen Impurity I
Product name	Naproxen Impurity I
Catalogue number	ZX-004978
CAS number	23981-47-7
Other CAS numbers	141969-30-4, 141969-29-1
IUPAC name	2-(6-methoxynaphthalen-2-yl)acetic acid
Molecular formula	C₁₃H₁₂O₃
Molar mass	216.23 g/mol
Exact mass	216.0786
Grade	Reference Standard
Purity / assay	96%
Physical form	Solid
XLogP3	2.6
H-bond donors / acceptors	1 / 3
Topological polar surface area	46.5 Å²
HS code	38229090
InChIKey	PHJFLPMVEFKEPL-UHFFFAOYSA-N
SMILES	COC1=CC2=C(C=C1)C=C(C=C2)CC(=O)O
PubChem CID	32176
Synonyms	6-Methoxy-2-naphthaleneacetic Acid, 6-Methoxy-2-naphthylacetic Acid, 6-MNA, Desmethyl Naproxen, (6-methoxy-2-naphthyl)acetic acid, 6MNA, (6-methoxynaphthalen-2-yl)acetic acid, 6-MNA cpd, Naproxen EP Impurity I, 6-Methoxynaphthalene-2-acetic acid, 6-MNAA, 2-(6-methoxy-2-naphthyl)acetic acid

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

Safety and GHS hazards

Irritant or harmful

Signal word Warning

H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements P261, P264, P264 + P265, P270, P271, P280, P301 + P317, P302 + P352, P304 + P340, P305 + P351 + P338, P319, P321, P330, 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 I
10 mg	Quoted on request
25 mg	Quoted on request
50 mg	Quoted on request
100 mg	Quoted on request
250 mg	Quoted 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 I

Which CAS number identifies Naproxen Impurity I?

Naproxen Impurity I is registered under CAS 23981-47-7. You may also see it listed as 6-Methoxy-2-naphthaleneacetic Acid, 6-Methoxy-2-naphthylacetic Acid, 6-MNA. Our catalogue number for this item is ZX-004978.

What are the formula and molar mass of Naproxen Impurity I?

For Naproxen Impurity I, its formula is C13H12O3 and its molar mass is 216.23 g/mol. The systematic (IUPAC) name is 2-(6-methoxynaphthalen-2-yl)acetic acid. InChIKey PHJFLPMVEFKEPL-UHFFFAOYSA-N lets you match it in any structure database.

How is Naproxen Impurity I used in pharmaceutical QC?

Naproxen Impurity I 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 I?

This listing is Reference Standard grade with 96% purity. 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 I?

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 I to my country?

Yes. Because Naproxen Impurity I 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.

More Naproxen standards

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