Z-L-aspartic acid β-tert-butyl ester α-methyl ester

Also known as: Z-Asp(OtBu)-OMe, (S)-4-tert-Butyl 1-methyl 2-(((benzyloxy)carbonyl)amino)succinate, 4-O-tert-butyl 1-O-methyl (2S)-2-(phenylmethoxycarbonylamino)butanedioate, N-[(Phenylmethoxy)carbonyl]-L-aspartic acid 4-(1,1-dimethylethyl) 1-methyl ester, CBZ-Asp(OtBu)-OMe, Z-Aspartic acid tert-butyl ester methyl ester, Z-L-aspartic acid β-tert-butyl ester α-methyl ester

Z-L-aspartic acid β-tert-butyl ester α-methyl ester (CAS 63327-57-1) is a compound in the Organic Acids category listed in the Jingsj chemical database. It has the molecular formula C17H23NO6 and a molecular weight of 337.36800 g/mol. Key property: a density of 1.161±0.06 g/cm3. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 63327-57-1
Jingsj CID: J-1517530-1
Molecular Formula: C₁₇H₂₃NO₆
Molecular Weight: 337.36800 g/mol
Category: Organic Acids
Last updated: 8/21/2026

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Physicochemical Properties

Density	1.161±0.06 g/cm3
Exact Mass	337.15300
PSA	90.93000
LogP	2.57710
Additional Property	Very slightly soluble (0.19 g/L) (25 ºC)

Customs & Trade Information

HS Code	2924299090
Summary	2924299090. 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 β-tert-butyl ester α-methyl ester?

The CAS number of Z-L-aspartic acid β-tert-butyl ester α-methyl ester is 63327-57-1.

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

Z-L-aspartic acid β-tert-butyl ester α-methyl ester has molecular formula C17H23NO6 and molecular weight 337.36800 g/mol.

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

For Z-L-aspartic acid β-tert-butyl ester α-methyl ester, Upstream Products: N-Benzyloxycarbonyl-L-aspartic acid 4-tert-butyl ester, iodomethane, Diazomethane; Downstream Products: N-Benzyloxycarbonyl-L-aspartic acid 4-tert-butyl ester, 1-Methyl N-Benzyloxycarbonyl-L-aspartate, L-Aspartic acid 4-tert-butyl-1-methyl ester hydrochloride.

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. "Z-L-aspartic acid β-tert-butyl ester α-methyl ester (CAS 63327-57-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1517530-1 (accessed 2026-11-09).

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