H-Asp(OtBu)-OH

Modify Date: 2025-08-20 22:02:33

H-Asp(OtBu)-OH structure	Common Name	H-Asp(OtBu)-OH
	CAS Number	3057-74-7	Molecular Weight	189.209
	Density	1.2±0.1 g/cm3	Boiling Point	318.7±37.0 °C at 760 mmHg
	Molecular Formula	C₈H₁₅NO₄	Melting Point	220°C (dec.)
	MSDS	Chinese USA	Flash Point	146.5±26.5 °C

Use of H-Asp(OtBu)-OH

L-Aspartic acid 4-tert-butyl ester is an aspartic acid derivative[1].

Name	(2S)-2-amino-4-[(2-methylpropan-2-yl)oxy]-4-oxobutanoic acid
Synonym	More Synonyms

Description	L-Aspartic acid 4-tert-butyl ester is an aspartic acid derivative[1].
Related Catalog	Research Areas >> Others Signaling Pathways >> Others >> Others
In Vitro	Amino acids and amino acid derivatives have been commercially used as ergogenic supplements. They influence the secretion of anabolic hormones, supply of fuel during exercise, mental performance during stress related tasks and prevent exercise induced muscle damage. They are recognized to be beneficial as ergogenic dietary substances[1].
References	[1]. Luckose F, et al. Effects of amino acid derivatives on physical, mental, and physiological activities. Crit Rev Food Sci Nutr. 2015;55(13):1793-1144.

Density	1.2±0.1 g/cm3
Boiling Point	318.7±37.0 °C at 760 mmHg
Melting Point	220°C (dec.)
Molecular Formula	C₈H₁₅NO₄
Molecular Weight	189.209
Flash Point	146.5±26.5 °C
Exact Mass	189.100113
PSA	89.62000
LogP	0.94
Vapour Pressure	0.0±1.5 mmHg at 25°C
Index of Refraction	1.476
Storage condition	2-8°C

H-Asp(OtBu)-OH MSDS(Chinese)

Personal Protective Equipment	Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Safety Phrases	S22-S24/25
RIDADR	NONH for all modes of transport
WGK Germany	3
HS Code	2922509090

Z-Asp(OtBu)-OH.H2O

CAS#:5545-52-8

~10%

H-Asp(OtBu)-OH

CAS#:3057-74-7

Literature: Felpin, Francois-Xavier; Fouquet, Eric Synthesis, 2011 , # 18 art. no. T66211SS, p. 2893 - 2896

H-Asp(OBut)-ObutHCL

CAS#:1791-13-5

~86%

H-Asp(OtBu)-OH

CAS#:3057-74-7

Literature: Stein, Karin A.; Toogood, Peter L. Journal of Organic Chemistry, 1995 , vol. 60, # 24 p. 8110 - 8112

FMOC-ASP(OTBU)-OH

CAS#:71989-14-5

~98%

L-Aspartic acid

CAS#:56-84-8

H-Asp(OtBu)-OH

CAS#:3057-74-7

Literature: Chen, Chun-Chi; Rajagopal, Basker; Liu, Xuan Yu; Chen, Kuan Lin; Tyan, Yu-Chang; Lin, Fui; Lin, Po-Chiao Amino Acids, 2014 , vol. 46, # 2 p. 367 - 374

1-O-benzyl 4-O-...

CAS#:2131-29-5

H-Asp(OtBu)-OH

CAS#:3057-74-7

Literature: Journal of Organic Chemistry, , vol. 28, p. 1251 - 1253

(2R)-N-[(2S)-2-...

CAS#:127556-07-4

~73%

H-Asp(OtBu)-OH

CAS#:3057-74-7

Literature: Oppolzer, Wolfgang; Moretti, Robert; Thomi, Silvia Tetrahedron Letters, 1989 , vol. 30, # 44 p. 6009 - 6010

Z-L-Asp(β-O-t-B...

CAS#:27486-72-2

H-Asp(OtBu)-OH

CAS#:3057-74-7

Literature: Justus Liebigs Annalen der Chemie, , vol. 673, p. 208 - 220

(S)-4-tert-buty...

CAS#:36702-55-3

H-Asp(OtBu)-OH

CAS#:3057-74-7

Literature: Chemische Berichte, , vol. 105, p. 3650 - 3657

2-Methyl-2-prop...

CAS#:5292-43-3

H-Asp(OtBu)-OH

CAS#:3057-74-7

Literature: Tetrahedron Letters, , vol. 30, # 44 p. 6009 - 6010

Precursor 8
CAS#:5545-52-8 Z-Asp(OtBu)-OH.H2O CAS#:1791-13-5 H-Asp(OBut)-ObutHCL CAS#:71989-14-5 FMOC-ASP(OTBU)-OH CAS#:2131-29-5 1-O-benzyl 4-O-...
CAS#:127556-07-4 (2R)-N-[(2S)-2-... CAS#:27486-72-2 Z-L-Asp(β-O-t-B... CAS#:36702-55-3 (S)-4-tert-buty... CAS#:5292-43-3 2-Methyl-2-prop...
DownStream 10
CAS#:5545-52-8 Z-Asp(OtBu)-OH.H2O CAS#:86061-01-0 Fmoc-Asp(OtBu)-Opfp CAS#:71989-14-5 FMOC-ASP(OTBU)-OH CAS#:117833-18-8 Ac-Asp(OtBu)-OH
CAS#:333366-23-7 N3-Asp(tBu)-OH ... CAS#:153287-86-6 Boc-L-aspartino... CAS#:1676-90-0 Boc-L-aspartic ... CAS#:152548-66-8 Fmoc-N-Me-Asp(O...
CAS#:254750-83-9 2-Methyl-2-prop... CAS#:868565-55-3 Pentanoic acid,...

HS Code	2922509090
Summary	2922509090. other amino-alcohol-phenols, amino-acid-phenols and other amino-compounds with oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

(2S)-2-Amino-4-tert-butoxy-4-oxobutanoic acid (non-preferred name)

EINECS 221-292-8

AmbotzHAA1072

(2S)-2-Amino-4-[(2-methyl-2-propanyl)oxy]-4-oxobutanoic acid

MFCD00038577

L-Aspartic acid 4-tert-Butyl ester

L-Aspartic acid, 4-(1,1-dimethylethyl) ester

H-Asp(OtBu)-OH

L-Asparticacid-t-butyl ester monohydrate

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Shanghai Nianxing Industrial Co., Ltd
China
Product Name: H-Asp(OtBu)-OH
Price: Check
Purity: 98.0%
Delivery: 10 Day
Contact: Yang
Email: sales@echemcloud.com

GL Biochem (Shanghai) Ltd.
China
Product Name: H-Asp(OtBu)-OH
Price: $Inquiry/1kg
Purity: 98.0%
Delivery: Inquiry
Contact: Jackie Yang
Email: ymbetter@glbiochem.com

Shanghai Jizhi Biochemical Technology Co., Ltd
China
Product Name: H-Asp(OtBu)-OH
Price: ￥448.0/25g ￥238.0/10g ￥1448.0/100g
Purity: 95.0%
Delivery: Inquiry
Contact: Liu jia
Email: 2130147988@qq.com

Nanjing Peptide Biotech Ltd
China
Product Name: H-Asp(OtBu)-OH
Price: ￥Inquiry/10g ￥Inquiry/100g ￥Inquiry/1kg ￥Inquiry/10kg
Purity: 98.0%
Delivery: 7 Day
Contact: jom
Email: chenglong.fan@njpeptide.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: L-Aspartic acid 4-tert-butyl ester
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Delivery: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

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H-Asp(OtBu)-OH

Use of H-Asp(OtBu)-OH

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H-Asp(OtBu)-OH Biological Activity

Chemical & Physical Properties

MSDS

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Precursor & DownStream

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The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.