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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

$10 - $2043
Product name: (E)-4-tert-Butoxy-4-oxobut-2-enoic acid
CAS: 135355-96-3
MF: C8H12O4
MW: 172.18
EINECS:
MDL Number:MFCD08669525
Synonyms: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-

Price28 Properties Safety Information Description

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aablocks
ACHEMBLOCK
AK Scientific
Ambeed
Chemenu
Crysdot
Matrix Scientific
Medical Isotopes, Inc.
Synthonix
TRC
Usbiological

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50mg
250mg
500mg
1g
5g
10g
25G

Manufactureraablocks
Product numberAA003A8Z
Product description(E)-4-(tert-Butoxy)-4-oxobut-2-enoic acid ≥95%
Packaging50mg
Price$10
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA003A8Z
Product description(E)-4-(tert-Butoxy)-4-oxobut-2-enoic acid 95%
Packaging250mg
Price$14
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA003A8Z
Product description(E)-4-(tert-Butoxy)-4-oxobut-2-enoic acid 95%
Packaging1g
Price$33
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA003A8Z
Product description(E)-4-(tert-Butoxy)-4-oxobut-2-enoic acid 95%
Packaging5g
Price$157
Updated2026-05-28
Buy

Manufactureraablocks
Product numberAA003A8Z
Product description(E)-4-(tert-Butoxy)-4-oxobut-2-enoic acid 95%
Packaging10g
Price$297
Updated2026-05-28
Buy

ManufacturerACHEMBLOCK
Product numberX185769
Product descriptionFumaric acid mono-tert-butyl ester 95%
Packaging5G
Price$125
Updated2026-05-27
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ManufacturerACHEMBLOCK
Product numberX185769
Product descriptionFumaric acid mono-tert-butyl ester 95%
Packaging25G
Price$420
Updated2026-05-27
Buy

ManufacturerAK Scientific
Product number3911AD
Product descriptionFumaricacidmono-tert-butylester
Packaging5g
Price$905
Updated2021-12-16
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ManufacturerAK Scientific
Product number3911AD
Product descriptionFumaricacidmono-tert-butylester
Packaging1g
Price$335
Updated2021-12-16
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ManufacturerAK Scientific
Product number3911AD
Product descriptionFumaricacidmono-tert-butylester
Packaging250mg
Price$163
Updated2021-12-16
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ManufacturerAmbeed
Product numberA419369
Product description(E)-4-(tert-Butoxy)-4-oxobut-2-enoicacid 95%
Packaging1g
Price$128
Updated2021-12-16
Buy

ManufacturerAmbeed
Product numberA419369
Product description(E)-4-(tert-Butoxy)-4-oxobut-2-enoicacid 95%
Packaging250mg
Price$64
Updated2021-12-16
Buy

ManufacturerAmbeed
Product numberA419369
Product description(E)-4-(tert-Butoxy)-4-oxobut-2-enoicacid 95%
Packaging10g
Price$1102
Updated2021-12-16
Buy

ManufacturerAmbeed
Product numberA419369
Product description(E)-4-(tert-Butoxy)-4-oxobut-2-enoicacid 95%
Packaging5g
Price$630
Updated2021-12-16
Buy

ManufacturerChemenu
Product numberCM133436
Product description(E)-4-(tert-butoxy)-4-oxobut-2-enoic acid 95%
Packaging5g
Price$445
Updated2026-05-26
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ManufacturerChemenu
Product numberCM133436
Product description(E)-4-(tert-butoxy)-4-oxobut-2-enoic acid 95%
Packaging1g
Price$89
Updated2026-05-26
Buy

Manufacturer	Product number	Product description	Packaging	Price	Updated	Buy
aablocks	AA003A8Z	(E)-4-(tert-Butoxy)-4-oxobut-2-enoic acid ≥95%	50mg	$10	2026-05-28	Buy
aablocks	AA003A8Z	(E)-4-(tert-Butoxy)-4-oxobut-2-enoic acid 95%	250mg	$14	2026-05-28	Buy
aablocks	AA003A8Z	(E)-4-(tert-Butoxy)-4-oxobut-2-enoic acid 95%	1g	$33	2026-05-28	Buy
aablocks	AA003A8Z	(E)-4-(tert-Butoxy)-4-oxobut-2-enoic acid 95%	5g	$157	2026-05-28	Buy
aablocks	AA003A8Z	(E)-4-(tert-Butoxy)-4-oxobut-2-enoic acid 95%	10g	$297	2026-05-28	Buy
ACHEMBLOCK	X185769	Fumaric acid mono-tert-butyl ester 95%	5G	$125	2026-05-27	Buy
ACHEMBLOCK	X185769	Fumaric acid mono-tert-butyl ester 95%	25G	$420	2026-05-27	Buy
AK Scientific	3911AD	Fumaricacidmono-tert-butylester	5g	$905	2021-12-16	Buy
AK Scientific	3911AD	Fumaricacidmono-tert-butylester	1g	$335	2021-12-16	Buy
AK Scientific	3911AD	Fumaricacidmono-tert-butylester	250mg	$163	2021-12-16	Buy
Ambeed	A419369	(E)-4-(tert-Butoxy)-4-oxobut-2-enoicacid 95%	1g	$128	2021-12-16	Buy
Ambeed	A419369	(E)-4-(tert-Butoxy)-4-oxobut-2-enoicacid 95%	250mg	$64	2021-12-16	Buy
Ambeed	A419369	(E)-4-(tert-Butoxy)-4-oxobut-2-enoicacid 95%	10g	$1102	2021-12-16	Buy
Ambeed	A419369	(E)-4-(tert-Butoxy)-4-oxobut-2-enoicacid 95%	5g	$630	2021-12-16	Buy
Chemenu	CM133436	(E)-4-(tert-butoxy)-4-oxobut-2-enoic acid 95%	5g	$445	2026-05-26	Buy
Chemenu	CM133436	(E)-4-(tert-butoxy)-4-oxobut-2-enoic acid 95%	1g	$89	2026-05-26	Buy

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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 Information

Symbol(GHS):

Signal word:

Warning

Hazard statements:

Code	Hazard statements	Hazard class	Category	Signal word	P-Codes
H302	Harmful if swallowed	Acute toxicity,oral	Category 4	Warning	P264, P270, P301+P312, P330, P501
H315	Causes skin irritation	Skin corrosion/irritation	Category 2	Warning	P264, P280, P302+P352, P321,P332+P313, P362
H319	Causes serious eye irritation	Serious eye damage/eye irritation	Category 2A	Warning	P264, P280, P305+P351+P338,P337+P313P
H335	May cause respiratory irritation	Specific target organ toxicity, single exposure;Respiratory tract irritation	Category 3	Warning

Precautionary statements:

P280	Wear protective gloves/protective clothing/eye protection/face protection.
P305+P351+P338	IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.

Description

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.

More related product prices

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

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J & K SCIENTIFIC LTD. Chemsky（shanghai）International Co.,Ltd. BOC Sciences Chengdu HappySyn Pharmaceutical Technology Co., Ltd. Shanghai potentpharm CO.,Ltd Shanghai TaoSu Biochemical Technology Co., Ltd. Bide Pharmatech Ltd. Tianjin Anhao Biological Technology Co., Ltd. Cool Pharm, Ltd DebyeTec.com Inc.

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

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Description

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