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ChemicalBook >> CAS DataBase List >>(E)-4-tert-Butoxy-4-oxobut-2-enoic acid

(E)-4-tert-Butoxy-4-oxobut-2-enoic acid

(E)-4-tert-Butoxy-4-oxobut-2-enoic acid Structure
(E)-4-tert-Butoxy-4-oxobut-2-enoic acid structure
CAS No.
135355-96-3
Chemical Name:
(E)-4-tert-Butoxy-4-oxobut-2-enoic acid
Synonyms
tert-Butyl fumarate;FuMaric Acid tert-Butyl Ester;4-Isoxazoleethanol,3,9-dimethyl-;Fumaric acid mono-tert-butyl ester;1,3-Propanediol,1-(9-piperidinyl)-;Fumaric Acid tert-Butyl Ester (>90%);(E)-3-t-butoxycarbonyl-2-butenoic acid;(E)-4-tert-Butoxy-4-oxobut-2-enoic acid;2(1H)-Quinolinone,3,4-dihydro-10-hydroxy-;(E)-4-(tert-Butoxy)-4-oxo-2-butenoic Acid
CBNumber:
CB1829154
Molecular Formula:
C8H12O4
Molecular Weight:
172.18
MDL Number:
MFCD08669525
MOL File:
Mol file
MSDS File:
SDS
Last updated:2026-09-12 18:50:06
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(E)-4-tert-Butoxy-4-oxobut-2-enoic acid Properties

Melting point 65-68 °C
Boiling point 273.8±23.0 °C(Predicted)
Density 1.130±0.06 g/cm3(Predicted)
storage temp. under inert gas (nitrogen or Argon) at 2-8°C
solubility Chloroform (Slightly), DMSO (Slightly, Sonicated), Methanol (Slightly, Sonicated
form Solid
pka 3.35±0.10(Predicted)
color White to Pale Yellow

SAFETY

Risk and Safety Statements

Symbol(GHS)  Exclamation Mark (GHS07)
GHS07
Signal word  Warning
Hazard statements  H302-H315-H319-H335
Precautionary statements  P280-P305+P351+P338

(E)-4-tert-Butoxy-4-oxobut-2-enoic acid price More Price(28)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
TRC TRC-F500395-5G Fumaric Acid tert-Butyl Ester (>90%) 135355-96-3 5g $1151 2026-06-03 Buy
TRC TRC-F500395-500MG Fumaric Acid tert-Butyl Ester (>90%) 135355-96-3 500mg $162 2026-06-03 Buy
Usbiological 164248 Fumaric Acid tert-Butyl Ester 135355-96-3 500mg $403 2026-06-03 Buy
TRC TRC-F500395-25G Fumaric Acid tert-Butyl Ester (>90%) 135355-96-3 25g $2043 2026-06-03 Buy
Synthonix B47037 (E)-4-(tert-Butoxy)-4-oxobut-2-enoic acid 95+% 135355-96-3 250mg $27 2026-05-06 Buy
Product number Packaging Price Buy
TRC-F500395-5G 5g $1151 Buy
TRC-F500395-500MG 500mg $162 Buy
164248 500mg $403 Buy
TRC-F500395-25G 25g $2043 Buy
B47037 250mg $27 Buy

(E)-4-tert-Butoxy-4-oxobut-2-enoic acid Chemical Properties, Uses, Production

Chemical Properties

White Solid

Uses

Fumaric Acid tert-Butyl Ester is a tert-Butyl ester derivative of Fumaric Acid (F500380). Fumaric Acid tert-Butyl Ester is a reactant used in the preparation of cysteine protease inhibitors based on fumaric acid-derived oligopeptides. It is also used in the preparation of Nε-fumaroylated diketopiperazine of L-Lys used for pulmonary drug delivery.

Uses

Fumaric acid tert-Butyl ester is a tert-Butyl ester derivative of Fumaric Acid (F500380), it is a reactant used in the preparation of cysteine protease inhibitors based on fumaric acid-derived oligopeptides. It is also used in the preparation of Nε-fumaroylated diketopiperazine of L-Lys used for pulmonary drug delivery.

(E)-4-tert-Butoxy-4-oxobut-2-enoic acid Preparation Products And Raw materials

Raw materials

Preparation Products

(E)-4-tert-Butoxy-4-oxobut-2-enoic acid Suppliers

Global Suppliers ( 66)
Supplier Tel Email Country ProdList Advantage
J & K SCIENTIFIC LTD. 18210857532 18210857532 jkinfo@jkchemical.com China 96815 76
Chemsky（shanghai）International Co.,Ltd. 021-50135380 shchemsky@sina.com China 32273 50
BOC Sciences 1-631-485-4226; 16314854226 info@bocsci.com United States 9920 65
Chengdu HappySyn Pharmaceutical Technology Co., Ltd. 85114309 18982182443 yangli@happysyn.com China 2297 55
Shanghai potentpharm CO.,Ltd 13524892556 sales-cn@potentpharm.com China 1011 55
Shanghai TaoSu Biochemical Technology Co., Ltd. 021-33632979 info@tsbiochem.com China 8039 58
Bide Pharmatech Ltd. 400-164-7117 18317119277 product02@bidepharm.com China 40000 60
Tianjin Anhao Biological Technology Co., Ltd. sales@ahpharmatech.com China 5734 55
Cool Pharm, Ltd 021-60455363 18019463053 sales@coolpharm.com China 8455 58
DebyeTec.com Inc. 18086626237 18086626237 2693528373@qq.com China 2936 56
Supplier Advantage
J & K SCIENTIFIC LTD. 76
Chemsky（shanghai）International Co.,Ltd. 50
BOC Sciences 65
Chengdu HappySyn Pharmaceutical Technology Co., Ltd. 55
Shanghai potentpharm CO.,Ltd 55
Shanghai TaoSu Biochemical Technology Co., Ltd. 58
Bide Pharmatech Ltd. 60
Tianjin Anhao Biological Technology Co., Ltd. 55
Cool Pharm, Ltd 58
DebyeTec.com Inc. 56

View Latest Price from (E)-4-tert-Butoxy-4-oxobut-2-enoic acid manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
(E)-4-TERT-BUTOXY-4-OXOBUT-2-ENOIC ACID pictures 2026-09-02 (E)-4-TERT-BUTOXY-4-OXOBUT-2-ENOIC ACID
135355-96-3
 $2.00-8.00 1kg 99% Henan Fengda Chemical Co., Ltd

(E)-4-tert-Butoxy-4-oxobut-2-enoic acid Spectrum

(E)-4-TERT-BUTOXY-4-OXOBUT-2-ENOIC ACID(135355-96-3)1HNMR

135355-96-3 ((E)-4-tert-Butoxy-4-oxobut-2-enoic acid) Related Search:

DL-sec-Butyl acetate Dimethyl maleate Di-tert-butyl Maleate ditert-butyl but-2-enedioate t-Butyl methyl fumarate
Monoethyl fumarate

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Fumaric acid mono-tert-butyl ester FuMaric Acid tert-Butyl Ester (E)-4-(tert-Butoxy)-4-oxo-2-butenoic Acid 2-Butenedioic acid (2E)-, 1-(1,1-dimethylethyl) ester 2-Butenedioicacid,mono(1,1-dimethylethyl)ester,(2E)- 4-Isoxazoleethanol,3,9-dimethyl- 1,3-Propanediol,1-(9-piperidinyl)- 2(1H)-Quinolinone,3,4-dihydro-10-hydroxy- tert-Butyl fumarate (E)-4-[(2-methylpropan-2-yl)oxy]-4-oxobut-2-enoic acid (E)-3-t-butoxycarbonyl-2-butenoic acid Fumaric Acid tert-Butyl Ester (>90%) (E)-4-tert-Butoxy-4-oxobut-2-enoic acid 135355-96-3 Aliphatics, Metabolites & Impruities, Pharmaceuticals, Intermediates & Fine Chemicals