112577

L-(−)-Maleinsäure

97%, optical purity ee: 99% (GLC)

• Synonym(e): (S)-(−)-2-Hydroxy-bernsteinsäure, L-Hydroxybutandisäure
• Lineare Formel: HO₂CCH₂CH(OH)CO₂H
• CAS-Nummer: 97-67-6
• Molekulargewicht: 134.09
• Beilstein: 1723541
• EG-Nummer: 202-601-5
• MDL-Nummer: MFCD00064213
• UNSPSC-Code: 12352106
• PubChem Substanz-ID: 24847101
• NACRES: NA.22

Eigenschaften

• Qualitätsniveau: 200
• Assay: 97%
• Form: powder
• Optische Aktivität: [α]20/D −27°, c = 5.5 in pyridine
• Optische Reinheit: ee: 99% (GLC)
• mp (Schmelzpunkt): 101-103 °C (lit.)
• Funktionelle Gruppe: carboxylic acid; hydroxyl
• SMILES String: O[C@@H](CC(O)=O)C(O)=O
• InChI: 1S/C4H6O5/c5-2(4(8)9)1-3(6)7/h2,5H,1H2,(H,6,7)(H,8,9)/t2-/m0/s1
• InChIKey: BJEPYKJPYRNKOW-REOHCLBHSA-N

Beschreibung

Allgemeine Beschreibung

L-(-)-Malic acid is an organic acid that is commonly found in wine. It plays an important role in wine microbiological stability.

Anwendung

L-(-)-Malic acid is a selective α-amino protecting reagent for amino acid derivatives. It is also a versatile synthon for the preparation of chiral compounds including κ-opioid receptor agonists, 1α,25-dihydroxyvitamin D₃ analogue, and phoslactomycin B.

Sicherheitshinweise

• Piktogramme: GHS07
• Signalwort: Warning
• H-Sätze: H315,H319
• P-Sätze: P264 - P280 - P302 + P352 - P305 + P351 + P338 - P332 + P313 - P337 + P313
• Gefahreneinstufungen: Eye Irrit. 2 - Skin Irrit. 2
• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: WGK 1
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: dust mask type N95 (US), Eyeshields, Gloves