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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 price.
  • $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:(E)-4-TERT-BUTOXY-4-OXOBUT-2-ENOIC ACID;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)-
Price32 Properties Safety Information Description
32 prices
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Brand
  • aablocks
  • ACHEMBLOCK
  • AK Scientific
  • Ambeed
  • Chemenu
  • Crysdot
  • Matrix Scientific
  • Medical Isotopes, Inc.
  • Synthonix
  • TRC
  • Usbiological
Package
  • 50mg
  • 250mg
  • 500mg
  • 1g
  • 5g
  • 10g
  • 25G
  • 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%
  • 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%
  • 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
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  • ManufacturerACHEMBLOCK
  • Product numberX185769
  • Product descriptionFumaric acid mono-tert-butyl ester 95%
  • Packaging5G
  • Price$125
  • Updated2026-05-27
  • Buy
  • 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
  • Packaging250mg
  • Price$163
  • Updated2021-12-16
  • Buy
  • ManufacturerAK Scientific
  • Product number3911AD
  • Product descriptionFumaricacidmono-tert-butylester
  • Packaging1g
  • Price$335
  • Updated2021-12-16
  • Buy
  • ManufacturerAK Scientific
  • Product number3911AD
  • Product descriptionFumaricacidmono-tert-butylester
  • Packaging5g
  • Price$905
  • 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
  • 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%
  • Packaging1g
  • Price$128
  • Updated2021-12-16
  • Buy
  • ManufacturerChemenu
  • Product numberCM133436
  • Product description(E)-4-(tert-butoxy)-4-oxobut-2-enoic acid 95%
  • Packaging1g
  • Price$89
  • Updated2026-05-20
  • Buy
  • 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% 1g $33 2026-05-28 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% 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 250mg $163 2021-12-16 Buy
AK Scientific 3911AD Fumaricacidmono-tert-butylester 1g $335 2021-12-16 Buy
AK Scientific 3911AD Fumaricacidmono-tert-butylester 5g $905 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
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% 1g $128 2021-12-16 Buy
Chemenu CM133436 (E)-4-(tert-butoxy)-4-oxobut-2-enoic acid 95% 1g $89 2026-05-20 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): Exclamation Mark (GHS07)
Signal word: Warning
Hazard statements:
Code Hazard statements Hazard class Category Signal word Pictogram 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.

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Suppliers and manufacturers

Henan Fengda Chemical Co., Ltd
(E)-4-TERT-BUTOXY-4-OXOBUT-2-ENOIC ACID
(E)-4-TERT-BUTOXY-4-OXOBUT-2-ENOIC ACID CAS:135355-96-3
ATK CHEMICAL COMPANY LIMITED
Fuxin Pharmaceutical
Career Henan Chemica Co
Hefei TNJ Chemical Industry Co.,Ltd.
Hangzhou MolCore BioPharmatech Co.,Ltd.
HANGZHOU LEAP CHEM CO., LTD.
Sichuan Biosynce Pharmatech Co., Ltd.
Shanghai Acmec Biochemical Technology Co., Ltd.
Aladdin Scientific