The L-Aspartic acid,N-[(1,1-dimethylethoxy)carbonyl]-, 1-(2,5-dioxo-1-pyrrolidinyl)4-(phenylmethyl) ester, with the CAS registry number 13798-75-9, is also known as Boc-Asp(OBzl)-OSU. It belongs to the product categories of Amino Acid Derivatives and Amino Acids. This chemical's molecular formula is C₂₀H₂₄N₂O₈ and molecular weight is 420.41. What's more, its systematic name is 4-Benzyl 1-(2,5-dioxopyrrolidin-1-yl) N-(tert-butoxycarbonyl)aspartate and IUPAC name is 4-O-benzyl 1-O-(2,5-dioxopyrrolidin-1-yl) 2-[(2-methylpropan-2-yl)oxycarbonylamino]butanedioate.

Physical properties about L-Aspartic acid,N-[(1,1-dimethylethoxy)carbonyl]-, 1-(2,5-dioxo-1-pyrrolidinyl)4-(phenylmethyl) ester are: (1) ACD/LogP: 1.92; (2) # of Rule of 5 Violations: 1; (3) ACD/LogD (pH 5.5): 1.92; (4) ACD/LogD (pH 7.4): 1.92; (5) ACD/BCF (pH 5.5): 16.83; (6) ACD/BCF (pH 7.4): 16.81; (7) ACD/KOC (pH 5.5): 262.61; (8) ACD/KOC (pH 7.4): 262.23; (9) #H bond acceptors: 10; (11) #H bond donors: 1; (12) #Freely Rotating Bonds: 11; (13) Polar Surface Area: 119.52 Ų; (14) Index of Refraction: 1.559; (15) Molar Refractivity: 102.86 cm³; (16) Molar Volume: 318.1 cm³; (17) Polarizability: 40.77×10^-24cm³; (18) Surface Tension: 56.1 dyne/cm; (19) Density: 1.32 g/cm³; (20) Melting point: 98-102 °C.
 
Preparation of L-Aspartic acid, N-[(1,1-dimethylethoxy)carbonyl]-, 1-(2,5-dioxo-1-pyrrolidinyl)4-(phenylmethyl) ester: this chemical is prepared by reaction of with N-Hydroxy-succinimide and BOC-L-aspartic acid 4-benzyl ester.

This reaction needs reagent N,N'-Dicyclohexylcarbodiimide and solvent Dioxane at the ambient temperature. The reaction time is 20 hours. The yield is 35%.

Uses of L-Aspartic acid,N-[(1,1-dimethylethoxy)carbonyl]-, 1-(2,5-dioxo-1-pyrrolidinyl)4-(phenylmethyl) ester: it is used to produce other chemicals. For example, it is used to produce Boc-Asp(OBzl)-Pro-OH.
 

The reaction occurs with reagent Et₃N and other condition of heating for 24 hours. The yield is 90 %.
 
You can still convert the following datas into molecular structure:
(1) SMILES: CC(C)(C)OC(=O)NC(CC(=O)OCC1=CC=CC=C1)C(=O)ON2C(=O)CCC2=O
(2) InChI: InChI=1S/C20H24N2O8/c1-20(2,3)29-19(27)21-14(18(26)30-22-15(23)9-10-16(22)24)11-17(25)28-12-13-7-5-4-6-8-13/h4-8,14H,9-12H2,1-3H3,(H,21,27)
(3) InChIKey: KEULITJLZYZYPU-UHFFFAOYSA-N.