DEHYDROASCORBIC ACID

Product Name: DEHYDROASCORBIC ACID
CAS No.: 490-83-5
Chemical Name: DEHYDROASCORBIC ACID
Synonyms: Dehydroascorbate;DEHYDRO-L-ASCORBIC ACID;BIS-DHA;C05422;ehydroascorbicaci;L-Dehydroascorbate;OXIDIZED VITAMIN C;DEHYDROASCORBIC ACID;Oxidized Ascorbic Acid;L-ASCORBIC ACID OXIDIZED
CBNumber: CB1397000
Molecular Formula: C6H6O6
Formula Weight: 174.11
MOL File: 490-83-5.mol

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DEHYDROASCORBIC ACID Property

Melting point:: 228 °C (dec.)(lit.)
alpha: D20 +56°
Boiling point:: 389.3±38.0 °C(Predicted)
Density: 1.743±0.06 g/cm3(Predicted)
storage temp.: -20°C
solubility: DMSO (Slightly, Heated), Methanol (Slightly, Sonicated)
form: Solid
pka: 3.90(at 25℃)
color: White to Dark Orange
Merck: 13,2886
Stability:: Light Sensitive
LogP: -1.702 (est)
CAS DataBase Reference: 490-83-5(CAS DataBase Reference)

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Safety

Hazard Codes: Xn
Risk Statements: 22
WGK Germany: 3
F: 1-8-10
HS Code: 2936270000

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Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H302Harmful if swallowed

Precautionary statements

P264Wash hands thoroughly after handling.

P264Wash skin thouroughly after handling.

P270Do not eat, drink or smoke when using this product.

P501Dispose of contents/container to..…

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N-Bromosuccinimide Price

Sigma-Aldrich

Product number: 261556
Product name: (L)-Dehydroascorbic acid
Packaging: 1g
Price: $172
Updated: 2024/03/01

Sigma-Aldrich

Product number: 261556
Product name: (L)-Dehydroascorbic acid
Packaging: 5g
Price: $433
Updated: 2024/03/01

Cayman Chemical

Product number: 29089
Product name: Dehydroascorbic Acid
Packaging: 250mg
Price: $97
Updated: 2024/03/01

Cayman Chemical

Product number: 29089
Product name: Dehydroascorbic Acid
Packaging: 1g
Price: $321
Updated: 2024/03/01

Sigma-Aldrich

Product number: 261556
Product name: (L)-Dehydroascorbic acid
Packaging: 250mg
Price: $93.4
Updated: 2024/03/01

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DEHYDROASCORBIC ACID Chemical Properties,Usage,Production

Chemical Properties

Orange Solid

Uses

The reversibly oxidized form of ascorbic acid.

Definition

ChEBI: Dehydroascorbic acid having the L-configuration.

Purification Methods

Crystallise dehydro-L(+)-ascorbic acid from MeOH. The anhydrous acid is formed by heating it in a vacuum at 100o/1hour to give a crisp glassy product which when shaken with absolute EtOH and then kept at 0o for 2days gives microcrystals of the anhydrous acid. This is then washed with absolute EtOH and dried in a vacuum. It has m 225o(dec) and is stable in acidic solution but decomposes rapidly in alkaline solution. A 1% solution of the anhydrous acid when dissolved in phthalate/HCl buffer pH 3.5 at 60o and cooled to 20o has [] 20D +56o(0minutes), +53.5o(2hours), +19o(3days), -2o(5days) and -6o(6days); then it becomes orange in colour. A freshly prepared 1% solution in H2O has [] D +50o(0minutes), +44o(2hours), +16o(3days) and 0o(5days). [Herbert et al. J Chem Soc 1270 1933, Kenyon et al. J Chem Soc 158 1948, Beilstein 18/5 V 411.]

DEHYDROASCORBIC ACID Preparation Products And Raw materials

Raw materials

Preparation Products

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DEHYDROASCORBIC ACID Suppliers

Canada 1 China 127 Germany 2 India 4 Japan 1 Switzerland 3 United Kingdom 9 United States 24 USA 1 Global 172

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View Lastest Price from DEHYDROASCORBIC ACID manufacturers

Zhuozhou Wenxi import and Export Co., Ltd

Product: (L)-Dehydroascorbic acid 490-83-5
Price: US $15.00-10.00/KG
Min. Order: 1KG
Purity: 99%+ HPLC
Supply Ability: Monthly supply of 1 ton
Release date: 2021-06-27

Career Henan Chemical Co

Product: DEHYDROASCORBIC ACID 490-83-5
Price: US $1.00/kg
Min. Order: 1g
Purity: 99%
Supply Ability: 100KG
Release date: 2018-12-24

490-83-5, DEHYDROASCORBIC ACIDRelated Search:

Sodium sulfide Vitamin E Acetylsalicylic acid culture medium ACETYL-SEROTONIN, N-(SH) Collagen ANTIOXIDANT 765 Ascorbic Acid DEHYDROASCORBIC ACID 2,3-HEXANEDIONE (S)-5-Hydroxymethyldihydrofuran-2-one Dihydrofuran-3(2H)-one TETRONIC ACID 2-Methyltetrahydrofuran-3-one D-Dehydroascorbic acid 1-DEHYDROASCORBIC ACID 5-(1,2-DIHYDROXYETHYL)-2,3,4(5H)-FURANTRIONE ASCORBIC ACID/DEHYDROASCORBIC ACID

(5R)-5β-[(S)-1,2-Dihydroxyethyl]tetrahydrofuran-2,3,4-trione

C05422

Dehydroascorbate

L-Dehydroascorbate

L-threo-2,3-Hexodiulosonic Acid γ-Lactone

Oxidized Ascorbic Acid

L-ASCORBIC ACID OXIDIZED

DEHYDROASCORBIC ACID

DEHYDRO-L-ASCORBIC ACID

DEHYDRO-L(+)-ASCORBIC ACID, DIMER

BIS-DEHYDRO-L-ASCORBIC ACID

BIS-DHA

OXIDIZED VITAMIN C

L-(+)-Dehydroascorbic Acid (1.24728)

L-threo-hexo-2,3-diulosono-1,4-lactone

L-threo-2,3-Hexodiulosonic acid, .gamma.-lactone

5-(1,2-dihydroxyethyl)oxolane-2,3,4-trione

DEHYDROASCORBIC ACID(RG)

L-(+)-DEHYDROASCORBICACID

Ascorbic Acid Impurity 18

(5R)-5-[(1S)-12-dihydroxyethyl]oxolane-234-trione

(R)-5-((S)-1,2-dihydroxyethyl)furan-2,3,4(5H)-trione

L-threo-2,3-Hexodiulosonic acid, g-lactone

ehydroascorbicaci

DEHYDROASCORBIC ACID USP/EP/BP

TIANFUCHEM--High purity 490-83-5 DEHYDROASCORBIC ACID

13C6]-(L)-Dehydroascorbic acid

1R-(1α,4aβ,10aα)]-1,2,3,4,4a,9,10,10a-octahydro-7-isopropyl-1,4a-dimethylphenanthren-1-carboxylic acid

490-83-5

C8H10O6

Specialty Synthesis

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KETONE

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Carbohydrate Synthesis

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