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Z-L-aspartic acid di-tert-butyl ester

Also known as: (S)-di-tert-butyl 2-(benzyloxycarbonylamino)succinate, Bis(2-methyl-2-propanyl) N-[(benzyloxy)carbonyl]-L-aspartate, CBZ-Asp(OtBu)-OtBu, CBZ-L-aspartic acid di-tert-butyl ester, Z-L-Asp(OtBu)-OtBu, L-Aspartic acid, N-[(phenylmethoxy)carbonyl]-, 1,4-bis(1,1-dimethylethyl) ester, di-tert-butyl N-Cbz-L-aspartate

Z-L-aspartic acid di-tert-butyl ester (CAS 42417-76-5) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C20H29NO6 and a molecular weight of 379.447 g/mol. Key properties include a boiling point of 485.5±45.0 °C at 760 mmHg, a density of 1.1±0.1 g/cm3 and a flash point of 247.4±28.7 °C. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
42417-76-5
Jingsj CID
J-1438989-0
Molecular Formula
C20H29NO6
Molecular Weight
379.447 g/mol
Category
Organic Acids
Last updated
8/21/2026

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Physicochemical Properties

Boiling Point485.5±45.0 °C at 760 mmHg
Density1.1±0.1 g/cm3
Flash Point247.4±28.7 °C
Exact Mass379.199493
PSA90.93000
LogP4.97
Vapor Pressure0.0±1.2 mmHg at 25°C
Refractive Index1.501

Customs & Trade Information

HS Code2924299090
Summary2924299090. other cyclic amides (including cyclic carbamates) and their derivatives; salts thereof. 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 Z-L-aspartic acid di-tert-butyl ester?

The CAS number of Z-L-aspartic acid di-tert-butyl ester is 42417-76-5.

What are the molecular formula and molecular weight of Z-L-aspartic acid di-tert-butyl ester?

Z-L-aspartic acid di-tert-butyl ester has molecular formula C20H29NO6 and molecular weight 379.447 g/mol.

What are the upstream and downstream products of Z-L-aspartic acid di-tert-butyl ester?

For Z-L-aspartic acid di-tert-butyl ester, Upstream Products: tert-Butyl acetate, N-Carbobenzyloxy-L-aspartic acid, tert-Butyl formate.

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

Last updated:

How to cite: Jingsj. "Z-L-aspartic acid di-tert-butyl ester (CAS 42417-76-5)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1438989-0 (accessed 2026-11-09).

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