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  • 21071-24-9 Structure
  • Basic information

    1. Product Name: 4-methoxybutanal
    2. Synonyms: 4-methoxybutanal;Butanal, 4-methoxy-
    3. CAS NO:21071-24-9
    4. Molecular Formula: C5H10O2
    5. Molecular Weight: 102.132
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 21071-24-9.mol
  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: 142.303°C at 760 mmHg
    3. Flash Point: 38.37°C
    4. Appearance: /
    5. Density: 0.89g/cm3
    6. Vapor Pressure: 5.625mmHg at 25°C
    7. Refractive Index: 1.389
    8. Storage Temp.: N/A
    9. Solubility: N/A
    10. CAS DataBase Reference: 4-methoxybutanal(CAS DataBase Reference)
    11. NIST Chemistry Reference: 4-methoxybutanal(21071-24-9)
    12. EPA Substance Registry System: 4-methoxybutanal(21071-24-9)
  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: N/A
    4. WGK Germany:
    5. RTECS:
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 21071-24-9(Hazardous Substances Data)

21071-24-9 Usage

General Description

4-methoxybutanal is a chemical compound with the molecular formula C5H10O2. It is a colorless liquid with a fruity odor, and it is commonly used as a flavoring agent in food and beverages. 4-methoxybutanal is formed through the oxidation of 4-methoxybutanol, and it is also a precursor in the synthesis of various organic compounds. It has been identified as a potential allergen and may cause skin irritation in some individuals. Overall, 4-methoxybutanal plays a role in the flavor and fragrance industry and has applications in both food and cosmetic products.

Check Digit Verification of cas no

The CAS Registry Mumber 21071-24-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,7 and 1 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 21071-24:
(7*2)+(6*1)+(5*0)+(4*7)+(3*1)+(2*2)+(1*4)=59
59 % 10 = 9
So 21071-24-9 is a valid CAS Registry Number.
InChI:InChI=1/C5H10O2/c1-7-5-3-2-4-6/h4H,2-3,5H2,1H3

21071-24-9SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 14, 2017

Revision Date: Aug 14, 2017

1.Identification

1.1 GHS Product identifier

Product name 4-methoxybutanal

1.2 Other means of identification

Product number -
Other names 1H-Benzimidazole,4-methoxy

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:21071-24-9 SDS

21071-24-9Relevant articles and documents

Straightforward Synthesis of Fluorinated Enals via Photocatalytic α-Perfluoroalkenylation of Aldehydes

Wulkesch, Christian,Czekelius, Constantin

, p. 7425 - 7438 (2021/06/21)

(Per)fluorinated substances represent an important compound class with regard to drug design and material chemistry. We found a mild, operationally simple, and inexpensive photocatalytic perfluoroalkenylation reaction giving tetrasubstituted, highly electron-deficient enals straight from aldehydes. This one-step reaction tolerates various functional groups and can be applied to a wide range of substrates giving the products in yields of 52-84%.

INDOLIZINE DERIVATIVES WHICH ARE APPLICABLE TO NEURODEGENERATIVE DISEASES

-

Paragraph 00207, (2016/04/19)

The present invention relates to indolizine compounds, and pharmaceutically acceptable compositions thereof, useful as antagonists of P2X7, and for the treatment of P2X7-related disorders.

Design, synthesis, and evaluation of no-donor containing carbonic anhydrase inhibitors to lower intraocular pressure

Huang, Qinhua,Rui, Eugene Y.,Cobbs, Morena,Dinh, Dac M.,Gukasyan, Hovhannes J.,Lafontaine, Jennifer A.,Mehta, Saurabh,Patterson, Brian D.,Rewolinski, David A.,Richardson, Paul F.,Edwards, Martin P.

, p. 2821 - 2833 (2015/04/14)

The antiglaucoma drugs dorzolamide (1) and brinzolamide (2) lower intraocular pressure (IOP) by inhibiting the carbonic anhydrase (CA) enzyme to reduce aqueous humor production. The introduction of a nitric oxide (NO) donor into the alkyl side chain of do

NRF2 REGULATORS

-

Page/Page column 406; 407, (2015/07/07)

The present invention relates to bis aryl analogs, pharmaceutical compositions containing them and their use as Nrf2 regulators.

18O assisted analysis of a γ,δ-epoxyketone cyclization: Synthesis of the C16-C28 fragment of ammocidin D

Chau, Stephen T.,Hayakawa, Yoichi,Sulikowski, Gary A.

supporting information; experimental part, p. 756 - 759 (2011/04/24)

The C16-C28 fragment common to the cytotoxic macrolide ammocidin D has been prepared by a stereospecific 5-exo closure of a γ,δ-epoxyketone followed by a rearrangement to a pyran acetal. The reaction pathway was traced by 18O labeling of the ke

INHIBITORS OF CARBONIC ANHYDRASE

-

Page/Page column 23-24, (2009/03/07)

The invention relates to a compound of formula (I) and to pharmaceutically acceptable salts and solvates thereof. The invention also relates to methods of treating glaucoma, ocular hypertension, age-related macular degeneration, diabetic macular edema, di

Swallowtail bacteriochlorins. Lipophilic absorbers for the near-infrared

Borbas, K. Eszter,Ruzie, Christian,Lindsey, Jonathan S.

supporting information; experimental part, p. 1931 - 1934 (2009/04/10)

Bacteriochlorins absorb strongly in the near-infrared spectral region and hence are ideally suited for diverse photomedical applications, yet naturally occurring bacteriochlorins have limited stability and synthetic malleability. A de novo route has been

Photochemical reactions of alkoxy-containing-alkyl phenylglyoxylates: Remote hydrogen abstraction

Hu, Shengkui,Neckers

, p. 1751 - 1754 (2007/10/03)

A series of alkoxy-containing-alkyl phenylglyoxylates have been synthesized and their photochemical reactions studied. The intention was to probe structural requirements for remote hydrogen abstraction. Products resulting from 1,10- and 1,11-hydrogen abstraction were isolated from the photochemical reactions of 4′-methoxybutyl phenylglyoxylate 3d and 5′-benzyloxypentyl phenylglyoxylate 3h respectively. Products resulting from Norrish Type II and intermolecular hydrogen abstraction reactions were also isolated. Triplet lifetimes of representative compounds were measured by laser flash photolysis.

Hydroxyalkylation with α-Hydroperoxydiazenes. Alcohols from Olefins and Carbonyl Compounds from Enol Ethers

Osei-Twum, Emmanuel Y.,McCallion, Doug,Nazran, Avtar S.,Panicucci, Rick,Risbood, Prabhakar A.,Warkentin, John

, p. 336 - 342 (2007/10/02)

Alkyl(1-hydroxy-1-methylethyl)diazenes 2a-f were prepared in solution by autoxidation of the corresponding hydrazones of acetone.Thermolysis of the diazenes at 50-80 deg C in alkenes leads to alcohols.For example, 2b decomposes in 1,1-diphenylethene to afford 5-hydroxy-5,5-diphenylpentanenitrile.Alkenes with abstractable allylic hydrogens gave analogous products, but in very low yield.Thermolysis of a diazene 2 in an enol ether solvent leads to an aldehyde or a ketone.Thus, 2a decomposes in 1-ethoxyethene and in 2-methoxypropene to afford, respectively, 4,4,4-trifluorobutanal and 5,5,5-trifluoro-2-pentanone.Yields lie in range from 50percent to 70percent.The thermolysis of 2 in alkenes involves radical intermediates and radical chain hydroxyalkylation of alkene double bonds.In one chain-propagating step, R*, generated from 2, adds to the alkene.The adduct radical so formed propagates by inducing decomposition of 2 by attack at hydroxyl oxygen.According to this mechanism, initial products from enol ethers are hemiacetals or hemiketals which do not survive the reaction conditions but decompose to the corresponding carbonyl compounds.Preliminary evidence for this mechanism is presented.

Addition of Aldehydes to Activated Double Bonds, XXXIII. Syntheses and Reactions of γ-Diketones Containing Ether- or Ester Groups

Stetter, Hermann,Leinen, Hans Theo

, p. 254 - 263 (2007/10/02)

The aldehydes 1 - 8 containing ether- or ester groups are prepared by oxidation of the corresponding alcohols with pyridinium chlorochromate.Thiazolium salt-catalyzed additions of these aldehydes to vinyl ketones lead to γ-diketones 9 - 22. 2,3-O-Isopropy

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