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(S)-(+)-Naproxen chloride

Also known as: (2S)-2-(6-methoxy-2-naphthyl)propanoyl chloride, (2S)-2-(6-methoxynaphthalen-2-yl)propanoyl chloride, (S)-2-(6-Methoxynaphthalen-2-yl)propanoyl chloride, 2-Naphthaleneacetyl chloride, 6-methoxy-α-methyl-, (αS)-, NAPRO-017, Sparsentan Impurity 14, naproxen chloride

(S)-(+)-Naproxen chloride (CAS 51091-84-0) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C14H13ClO2 and a molecular weight of 248.70500 g/mol. It is classified under GHS with signal word Warning and hazard statements H319 — Causes serious eye irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
51091-84-0
Jingsj CID
J-858262-5
Molecular Formula
C14H13ClO2
Molecular Weight
248.70500 g/mol
Category
Aromatic Hydrocarbons
Last updated
8/21/2026
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Physicochemical Properties

Exact Mass248.06000
PSA26.30000
LogP3.71730

GHS Safety & Compliance

IrritantSignal word: Warning
  • H319 — Causes serious eye irritation

Customs & Trade Information

HS Code2918990090
Summary2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

Frequently Asked Questions

What is the CAS number of (S)-(+)-Naproxen chloride?

The CAS number of (S)-(+)-Naproxen chloride is 51091-84-0.

What are the molecular formula and molecular weight of (S)-(+)-Naproxen chloride?

(S)-(+)-Naproxen chloride has molecular formula C14H13ClO2 and molecular weight 248.70500 g/mol.

Is (S)-(+)-Naproxen chloride hazardous?

(S)-(+)-Naproxen chloride has GHS signal word Warning and hazard statements H319 — Causes serious eye irritation.

What are the upstream and downstream products of (S)-(+)-Naproxen chloride?

For (S)-(+)-Naproxen chloride, Upstream Products: Naproxen, Oxalyl chloride; Downstream Products: (±)-2-(6-Methoxy-2-naphthyl)propionic acid, Naproxcinod.

Data compiled from public chemical databases such as PubChem and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "(S)-(+)-Naproxen chloride (CAS 51091-84-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-858262-5 (accessed 2026-11-09).

Data for reference only; verify product details with suppliers before purchase.