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Sigma-Aldrich

Boc-Asp(OBzl)-OH

≥99.0% (sum of enantiomers, HPLC)

Synonym(s):

N-(tert-Butoxycarbonyl)-L-aspartic acid 4-benzyl ester, Boc-L-aspartic acid 4-benzyl ester

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About This Item

Linear Formula:
C6H5CH2OCOCH2CH(COOH)NHCOOC(CH3)3
CAS Number:
7536-58-5
Molecular Weight:
323.34
Beilstein:
2064127
EC Number:
231-406-8
MDL number:
MFCD00065564
UNSPSC Code:
12352209
eCl@ss:
32160406
PubChem Substance ID:
57647403
NACRES:
NA.22

Quality Level

100

Assay

≥99.0% (sum of enantiomers, HPLC)

optical activity

[α]20/D −20.0±1°, c = 2% in DMF

reaction suitability

reaction type: Boc solid-phase peptide synthesis

mp

98-102 °C (lit.)

application(s)

peptide synthesis

SMILES string

[H][C@@](CC(=O)OCc1ccccc1)(NC(=O)OC(C)(C)C)C(O)=O

InChI

1S/C16H21NO6/c1-16(2,3)23-15(21)17-12(14(19)20)9-13(18)22-10-11-7-5-4-6-8-11/h4-8,12H,9-10H2,1-3H3,(H,17,21)(H,19,20)/t12-/m0/s1

InChI key

SOHLZANWVLCPHK-LBPRGKRZSA-N

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Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Nicole Niklas et al.
Dalton transactions (Cambridge, England : 2003), (1)(1), 154-162 (2006-12-13)
The amino acid derivative Boc-Asp-OBzl (Boc=N-butyloxycarbonyl; Asp=aspartic acid; Bzl=benzyl) was functionalized by coupling its carboxylate side chain to dipicolylamine. This yielded the tridentate nitrogen donor ligand Boc-Asp(Dpa)-OBzl (-OBzl). The compound -OBzl contains three different carbonyl groups: a tertiary amide linkage
Vitamin K1 dependent carboxylase: beta-carboxylation of t-butyloxycarbonylaspartic acid alpha-benzyl ester.
S E Hamilton et al.
Biochemical and biophysical research communications, 107(1), 246-249 (1982-07-16)
J J McTigue et al.
The Journal of biological chemistry, 259(7), 4272-4278 (1984-04-10)
The rat liver microsomal vitamin K-dependent carboxylase has been shown to carboxylate the aspartyl residue in N alpha-t-butyloxycarbonylaspartic acid alpha-benzyl ester to a beta-carboxyaspartyl residue. The enzyme also carboxylates aspartyl residues in low molecular weight peptides to beta-carboxyaspartyl residues, but
Tomohisa Sawada et al.
Nature communications, 10(1), 5687-5687 (2019-12-14)
Cavity creation is a key to the origin of biological functions. Small cavities such as enzyme pockets are created simply through liner peptide folding. Nature can create much larger cavities by threading and entangling large peptide rings, as learned from

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