229253

Karminsäure

≥90% (HPLC)

• Synonym(e): Karminsäure
• Empirische Formel (Hill-System): C₂₂H₂₀O₁₃
• CAS-Nummer: 1260-17-9
• Molekulargewicht: 492.39
• Farbindexnummer: 75470
• Beilstein: 71651
• EG-Nummer: 215-023-3
• MDL-Nummer: MFCD00167028
• UNSPSC-Code: 12171500
• PubChem Substanz-ID: 24853740
• NACRES: NA.47

Eigenschaften

• Qualitätsniveau: 100
• Assay: ≥90% (HPLC)
• Form: powder
• Optische Aktivität: [α]20/D +3.1°, c = 1 in H₂O
• Farbe: purple to red-purple; red to very dark red
• mp (Schmelzpunkt): 136 °C
• Löslichkeit: 1 N acetic acid: 1%, clear to hazy, red
• λmax: 495 nm
• ε (Extinktionskoeffizient): ≥13000 at 222-228 nm in ethanol at 0.03 g/L; ≥18000 at 275-281 nm in ethanol at 0.03 g/L
• Anwendung(en): diagnostic assay manufacturing; hematology; histology
• Lagertemp.: room temp
• SMILES String: Cc1c(C(O)=O)c(O)cc2C(=O)c3c(O)c(O)c([C@@H]4O[C@H](CO)[C@@H](O)[C@H](O)[C@H]4O)c(O)c3C(=O)c12
• InChI: 1S/C22H20O13/c1-4-8-5(2-6(24)9(4)22(33)34)13(25)10-11(15(8)27)16(28)12(18(30)17(10)29)21-20(32)19(31)14(26)7(3-23)35-21/h2,7,14,19-21,23-24,26,28-32H,3H2,1H3,(H,33,34)/t7-,14-,19+,20-,21+/m1/s1
• InChIKey: DGQLVPJVXFOQEV-JNVSTXMASA-N

Beschreibung

Allgemeine Beschreibung

Carmine is a cochineal product usually furnished as an aluminum and calcium salt of carminic acid. Carminic acid is used for human-medical cell diagnosis and serves the purpose of the histological investigation of sample material of human origin. It is suitable for staining nuclei in histological sections. It is utilized in various staining methods including the procedure for detection of glycogen and mucous substances (Best′s carmine), for nuclear staining, or vital staining.

Anwendung

Carminic acid (CI 75470) is used in Orth′s lithium carmine technique for nuclear staining, Best′s stain for glycogen, and Southgates′s mucicarmine method.

Sicherheitshinweise

• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: WGK 2
• Persönliche Schutzausrüstung: Eyeshields, Gloves, type N95 (US)