1-Methyl N-Benzyloxycarbonyl-L-aspartate

Also known as: Z-Asp-OMe, Cbz-Asp-OMe, Cbz-L-aspartic acid 1-methyl ester, 1-Methyl N-Carbobenzoxy-L-aspartate, N-Cbz-L-aspartic acid 1-methyl ester, Z-L-Aspartic acid 1-methyl ester, (3S)-4-methoxy-4-oxo-3-(phenylmethoxycarbonylamino)butanoic acid, (S)-3-(((Benzyloxy)carbonyl)amino)-4-methoxy-4-oxobutanoic acid

1-Methyl N-Benzyloxycarbonyl-L-aspartate (CAS 4668-42-2) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C13H15NO6 and a molecular weight of 281.261 g/mol. Key properties include a melting point of 89.3ºC (dec.), a boiling point of 498.9±45.0 °C at 760 mmHg, a density of 1.3±0.1 g/cm3 and a flash point of 255.6±28.7 °C. It is classified under GHS with signal word Danger and hazard statements H302 — Harmful if swallowed, H318 — Causes serious eye damage and H332 — Harmful if inhaled. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 4668-42-2
Jingsj CID: J-30439-2
Molecular Formula: C₁₃H₁₅NO₆
Molecular Weight: 281.261 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	89.3ºC (dec.)
Boiling Point	498.9±45.0 °C at 760 mmHg
Density	1.3±0.1 g/cm3
Flash Point	255.6±28.7 °C
Exact Mass	281.089935
PSA	101.93000
LogP	2.11
Vapor Pressure	0.0±1.3 mmHg at 25°C
Refractive Index	1.540

GHS Safety & Compliance

Corrosion / IrritantSignal word: Danger

H302 — Harmful if swallowed
H318 — Causes serious eye damage
H332 — Harmful if inhaled

Activity & Biological Data

Additional Information	[1]. Luckose F, et al. Effects of amino acid derivatives on physical, mental, and physiological activities. Crit Rev Food Sci Nutr. 2015;55(13):1793-1144.

Frequently Asked Questions

What is the CAS number of 1-Methyl N-Benzyloxycarbonyl-L-aspartate?

The CAS number of 1-Methyl N-Benzyloxycarbonyl-L-aspartate is 4668-42-2.

What are the molecular formula and molecular weight of 1-Methyl N-Benzyloxycarbonyl-L-aspartate?

1-Methyl N-Benzyloxycarbonyl-L-aspartate has molecular formula C13H15NO6 and molecular weight 281.261 g/mol.

Is 1-Methyl N-Benzyloxycarbonyl-L-aspartate hazardous?

1-Methyl N-Benzyloxycarbonyl-L-aspartate has GHS signal word Danger and hazard statements H302 — Harmful if swallowed; H318 — Causes serious eye damage; H332 — Harmful if inhaled.

What are the upstream and downstream products of 1-Methyl N-Benzyloxycarbonyl-L-aspartate?

For 1-Methyl N-Benzyloxycarbonyl-L-aspartate, Upstream Products: Methanol, N-Cbz-L-aspartic anhydride, N-Carbobenzyloxy-L-aspartic acid; Downstream Products: N-Benzyloxycarbonyl-L-aspartic acid 4-tert-butyl ester, L-Aspartic acid 1-methyl ester, Methyl 2-(((benzyloxy)carbonyl)amino)acrylate.

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. "1-Methyl N-Benzyloxycarbonyl-L-aspartate (CAS 4668-42-2)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-30439-2 (accessed 2026-11-09).

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