Z-L-aspartic acid di-tert·butyl ester

Modify Date: 2024-01-06 12:34:23

Z-L-aspartic acid di-tert·butyl ester Structure
Z-L-aspartic acid di-tert·butyl ester structure
 Common Name Z-L-aspartic acid di-tert·butyl ester
CAS Number 42417-76-5 Molecular Weight 379.447
Density 1.1±0.1 g/cm3 Boiling Point 485.5±45.0 °C at 760 mmHg
Molecular Formula C20H29NO6 Melting Point N/A
MSDS N/A Flash Point 247.4±28.7 °C

 Names

Name Z-L-aspartic acid di-tert·butyl ester
Synonym More Synonyms

 Chemical & Physical Properties

Density 1.1±0.1 g/cm3
Boiling Point 485.5±45.0 °C at 760 mmHg
Molecular Formula C20H29NO6
Molecular Weight 379.447
Flash Point 247.4±28.7 °C
Exact Mass 379.199493
PSA 90.93000
LogP 4.97
Vapour Pressure 0.0±1.2 mmHg at 25°C
Index of Refraction 1.501

 Safety Information

HS Code 2924299090

 Synthetic Route

tert-Butyl acetate structure

tert-Butyl acetate

CAS#:540-88-5
Z-Asp-OH structure

Z-Asp-OH

CAS#:1152-61-0

~60%

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

Z-L-aspartic ac...

CAS#:42417-76-5
Literature: Allen, David Robert; Kyung-Lee, Seung-Hee Patent: US2003/236430 A1, 2003 ; Location in patent: Page 3 ;
tert-Butyl acetate structure

tert-Butyl acetate

CAS#:540-88-5
Z-Asp-OH structure

Z-Asp-OH

CAS#:1152-61-0

~50%

(S)-3-(((Benzyloxy)carbonyl)amino)-4-(tert-butoxy)-4-oxobutanoic acid structure

(S)-3-(((Benzyl...

CAS#:47307-26-6
Z-Asp(OtBu)-OH.H2O structure

Z-Asp(OtBu)-OH.H2O

CAS#:5545-52-8
Detail
Literature: Allen, David Robert; Kyung-Lee, Seung-Hee Patent: US2003/236430 A1, 2003 ; Location in patent: Page 3 ;
TERT-BUTYL FORMATE structure

TERT-BUTYL FORMATE

CAS#:762-75-4
Z-Asp-OH structure

Z-Asp-OH

CAS#:1152-61-0

~2%

(S)-3-(((Benzyloxy)carbonyl)amino)-4-(tert-butoxy)-4-oxobutanoic acid structure

(S)-3-(((Benzyl...

CAS#:47307-26-6
Z-Asp(OtBu)-OH.H2O structure

Z-Asp(OtBu)-OH.H2O

CAS#:5545-52-8
Detail
Literature: Allen, David Robert; Kyung-Lee, Seung-Hee Patent: US2003/236430 A1, 2003 ; Location in patent: Page column 4 ;
2-Methyl-2-propanyl bromoacetate structure

2-Methyl-2-prop...

CAS#:5292-43-3
Z-Asp-OH structure

Z-Asp-OH

CAS#:1152-61-0

~29%

(S)-3-(((Benzyloxy)carbonyl)amino)-4-(tert-butoxy)-4-oxobutanoic acid structure

(S)-3-(((Benzyl...

CAS#:47307-26-6
Z-Asp(OtBu)-OH.H2O structure

Z-Asp(OtBu)-OH.H2O

CAS#:5545-52-8
Detail
Literature: Allen, David Robert; Kyung-Lee, Seung-Hee Patent: US2003/236430 A1, 2003 ; Location in patent: Page column 4 ;
Methyl tert-butyl ether structure

Methyl tert-but...

CAS#:1634-04-4
Z-Asp-OH structure

Z-Asp-OH

CAS#:1152-61-0

~0%

(S)-3-(((Benzyloxy)carbonyl)amino)-4-(tert-butoxy)-4-oxobutanoic acid structure

(S)-3-(((Benzyl...

CAS#:47307-26-6
Z-Asp(OtBu)-OH.H2O structure

Z-Asp(OtBu)-OH.H2O

CAS#:5545-52-8
Detail
Literature: Allen, David Robert; Kyung-Lee, Seung-Hee Patent: US2003/236430 A1, 2003 ; Location in patent: Page column 4 ;
tert-Butyl methacrylate structure

tert-Butyl meth...

CAS#:585-07-9
Z-Asp-OH structure

Z-Asp-OH

CAS#:1152-61-0

~55%

(S)-3-(((Benzyloxy)carbonyl)amino)-4-(tert-butoxy)-4-oxobutanoic acid structure

(S)-3-(((Benzyl...

CAS#:47307-26-6
Z-Asp(OtBu)-OH.H2O structure

Z-Asp(OtBu)-OH.H2O

CAS#:5545-52-8
Detail
Literature: Allen, David Robert; Kyung-Lee, Seung-Hee Patent: US2003/236430 A1, 2003 ; Location in patent: Page column 4 ;
Tert-butyl propionate structure

Tert-butyl prop...

CAS#:20487-40-5
Z-Asp-OH structure

Z-Asp-OH

CAS#:1152-61-0

~47%

(S)-3-(((Benzyloxy)carbonyl)amino)-4-(tert-butoxy)-4-oxobutanoic acid structure

(S)-3-(((Benzyl...

CAS#:47307-26-6
Z-Asp(OtBu)-OH.H2O structure

Z-Asp(OtBu)-OH.H2O

CAS#:5545-52-8
Detail
Literature: Allen, David Robert; Kyung-Lee, Seung-Hee Patent: US2003/236430 A1, 2003 ; Location in patent: Page column 4 ;

 Customs

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%

 Synonyms

di-tert-butyl N-acetylcystinate
di-tert-butyl N-Cbz-L-aspartate
L-Aspartic acid, N-[(phenylmethoxy)carbonyl]-, bis(1,1-dimethylethyl) ester
Bis(2-methyl-2-propanyl) N-[(benzyloxy)carbonyl]-L-aspartate
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