95209

L-acide ascorbique

BioUltra, ≥99.5% (RT)

• Synonyme(s) : Acide L-thréoascorbique, Facteur anti-scorbut, Vitamine C
• Formule empirique (notation de Hill): C₆H₈O₆
• Numéro CAS: 50-81-7
• Poids moléculaire : 176.12
• Numéro Beilstein : 84272
• Numéro CE : 200-066-2
• Numéro MDL: MFCD00064328
• Code UNSPSC : 12352205
• ID de substance PubChem : 57653659
• Nomenclature NACRES : NA.79

Propriétés

• Source biologique: synthetic
• Niveau de qualité: 200
• Gamme de produits: BioUltra
• Pureté: ≥99.5% (RT)
• Forme: powder or crystals
• Impuretés: insoluble matter, passes filter test
• Résidus de calcination: ≤0.05% (as SO₄)
• Perte: ≤0.05% loss on drying, 20 °C (HV)
• Couleur: white to off-white
• pH: 1.0-2.5 (25 °C, 1 M in H₂O)
• Pf: 190-194 °C (dec.)
• Solubilité: H₂O: 1 M at 20 °C, clear, colorless
• Traces d'anions: chloride (Cl^-): ≤50 mg/kg; sulfate (SO₄^2-): ≤20 mg/kg
• Traces de cations: Al: ≤5 mg/kg; As: ≤0.1 mg/kg; Ba: ≤5 mg/kg; Bi: ≤5 mg/kg; Ca: ≤25 mg/kg; Cd: ≤5 mg/kg; Co: ≤5 mg/kg; Cr: ≤5 mg/kg; Cu: ≤5 mg/kg; Fe: ≤5 mg/kg; K: ≤50 mg/kg; Li: ≤5 mg/kg; Mg: ≤5 mg/kg; Mn: ≤5 mg/kg; Mo: ≤5 mg/kg; Na: ≤50 mg/kg; Ni: ≤5 mg/kg; Pb: ≤5 mg/kg; Sr: ≤5 mg/kg; Zn: ≤5 mg/kg
• Absorption: cut-off at 306 nm in H₂O at 1 M
• Chaîne SMILES: OC([C@]([C@@H](O)CO)([H])O1)=C(O)C1=O
• InChI: 1S/C6H8O6/c7-1-2(8)5-3(9)4(10)6(11)12-5/h2,5,7-10H,1H2/t2-,5+/m0/s1
• Clé InChI: CIWBSHSKHKDKBQ-JLAZNSOCSA-N
• Informations sur le gène: human ... SLC23A2(9962)

Description

Description générale

L-Ascorbic acid, also known as vitamin C, is a water-soluble vitamin. It is naturally present in a variety of foods such as citrus fruits and vegetables. It is present only in minimal amount in milk.

Application

L-Ascorbic acid has been used as an antioxidant supplement in incubation solution for dissected and sliced brain sections. It has also been used as a supplement in phosphate-buffered saline (PBS) wash buffer during oxidative GFP chromophore formation.

Actions biochimiques/physiologiques

L-Ascorbic acid (Vitamin C) acts as a potential anti-oxidant and reducing agent. It prevents bacterial mutagenesis induced by N-nitroso compounds. In plants, vitamin C elicits several cellular processes such as growth, apoptosis, pathogen responses, hormone responses, flowering and senescence, and protection against environmental stresses. Vitamin C deficiency is associated with the development of scurvy, prominent - gingivitis, perifollicular hemorrhages, poor wound healing, petechiae and ecchymosis.

Autres remarques

Denaturation of proteins; Dimeric association of E. coli RNA polymerase α subunits, studied by cleavage of single cysteine α subunits conjugated to Fe-BABE.

Informations sur la sécurité

• Code de la classe de stockage: 11 - Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 1
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable
• Équipement de protection individuelle: Eyeshields, Gloves, type N95 (US)