N-(1-Naphthyl)phthalimide

Also known as: N-alpha-Naphthylphthalimide, 2-(1-naphthyl)-1H-isoindole-1,3(2H)-dione, 2-(1-naphthyl)isoindoline-1,3-quinone, 2-(naphthalen-1-yl)isoindoline-1,3-dione, 2-Naphthalen-1-yl-isoindole-1,3-dione, 2-naphthalen-1-ylisoindole-1,3-dione, 1-(N-phthalimido)naphthalene, 1H-Isoindole-1,3(2H)-dione, 2-(1-naphthalenyl)-, Caswell No. 593, N-(ALPHA-NAPHTHYL)PHTHALIMIDE, N-1-Naphthylphthalimide, N-naphthalen-1-yl-phthalimide, Phthalimide, N-1-naphthyl-

N-(1-Naphthyl)phthalimide (CAS 5333-99-3) is a compound in the Organic Bases category listed in the Jingsj chemical database. It has the molecular formula C18H11NO2 and a molecular weight of 273.28500 g/mol. Key properties include a boiling point of 482.8ºC at 760mmHg and a density of 1.36g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 5333-99-3
Jingsj CID: J-850599-5
Molecular Formula: C₁₈H₁₁NO₂
Molecular Weight: 273.28500 g/mol
Category: Organic Bases
Last updated: 8/21/2026

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Physicochemical Properties

Boiling Point	482.8ºC at 760mmHg
Density	1.36g/cm3
Exact Mass	273.07900
PSA	37.38000
LogP	3.70540
Refractive Index	1.726

Customs & Trade Information

HS Code	2925190090
Summary	2925190090 other imides and their derivatives; salts thereof VAT:17.0% Tax rebate rate:9.0% Supervision conditions:none MFN tariff:6.5% General tariff:30.0%

Frequently Asked Questions

What is the CAS number of N-(1-Naphthyl)phthalimide?

The CAS number of N-(1-Naphthyl)phthalimide is 5333-99-3.

What are the molecular formula and molecular weight of N-(1-Naphthyl)phthalimide?

N-(1-Naphthyl)phthalimide has molecular formula C18H11NO2 and molecular weight 273.28500 g/mol.

What are the upstream and downstream products of N-(1-Naphthyl)phthalimide?

For N-(1-Naphthyl)phthalimide, Upstream Products: Phthalic anhydride, 1-Naphthylamine, 1-Naphthaleneboronic acid; Downstream Products: 5-nitronaphthalen-1-amine, 4-Nitro-1-naphthylamine, Naptalam.

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

Last updated: 8/21/2026

How to cite: Jingsj. "N-(1-Naphthyl)phthalimide (CAS 5333-99-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-850599-5 (accessed 2026-11-09).

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