(R)-(-)-1-(1-Naphthyl)ethyl Isocyanate

异氰酸(R)-(-)-1-(1-萘基)乙酯

Also known as: (R)-(-)-1-(1-Naphthyl)ethyl isocyanate, (R)-NEI, 1-[(1R)-1-isocyanatoethyl]naphthalene, Isocyanic acid (R)-(-)-1-(1-naphthyl)ethyl ester, (-)-alpha-(1-naphthyl)ethyl isocyanate, (R) 1-(1-napthyl)ethyl isocyanate, (R)(-)-alpha-(1-naphthyl)ethyl isocyanate, Naphthalene, 1-[(1R)-1-isocyanatoethyl]-

(R)-(-)-1-(1-Naphthyl)ethyl Isocyanate (CAS 42340-98-7) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H11NO and a molecular weight of 197.23300 g/mol. It is also known as (R)-(-)-1-(1-Naphthyl)ethyl isocyanate, (R)-NEI and 1-[(1R)-1-isocyanatoethyl]naphthalene. Key properties include a boiling point of 106-108 °C0.16 mm Hg(lit.), a density of 1.118 g/mL at 25 °C(lit.) and a flash point of 200 °F. GHS signal word: Danger. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
42340-98-7
Jingsj CID
J-26216-7
Molecular Formula
C13H11NO
Chinese Name
异氰酸(R)-(-)-1-(1-萘基)乙酯
Molecular Weight
197.23300 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point106-108 °C0.16 mm Hg(lit.)
Density1.118 g/mL at 25 °C(lit.)
Flash Point200 °F

GHS Safety & Compliance

Acute Toxicity / Health HazardSignal word: Danger

Frequently Asked Questions

What is the CAS number of (R)-(-)-1-(1-Naphthyl)ethyl Isocyanate?

The CAS number of (R)-(-)-1-(1-Naphthyl)ethyl Isocyanate is 42340-98-7.

What are the molecular formula and molecular weight of (R)-(-)-1-(1-Naphthyl)ethyl Isocyanate?

(R)-(-)-1-(1-Naphthyl)ethyl Isocyanate has molecular formula C13H11NO and molecular weight 197.23300 g/mol.

Is (R)-(-)-1-(1-Naphthyl)ethyl Isocyanate hazardous?

(R)-(-)-1-(1-Naphthyl)ethyl Isocyanate has GHS signal word Danger.

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

Last updated:

How to cite: Jingsj. "(R)-(-)-1-(1-Naphthyl)ethyl Isocyanate (CAS 42340-98-7)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-26216-7 (accessed 2026-10-24).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.