70540

Naphtholgelb S

for microscopy (Hist.), for the precipitation (of amino acids and peptides)

• Synonym(e): 2,4-Dinitro-1-naphthol-7-sulfonsäure Natriumsalz, 5,7-Dinitro-8-hydroxy-2-naphthalinsulfonsäure Natriumsalz, Flaviansäure Natriumsalz, Säuregelb 1
• Empirische Formel (Hill-System): C₁₀H₄N₂Na₂O₈S
• CAS-Nummer: 846-70-8
• Molekulargewicht: 358.19
• Farbindexnummer: 10316
• Beilstein: 3839220
• EG-Nummer: 212-690-2
• MDL-Nummer: MFCD00003958
• UNSPSC-Code: 12171500
• PubChem Substanz-ID: 329762555
• NACRES: NA.47

Eigenschaften

• Qualität: for microscopy (Hist.); for the precipitation (of amino acids and peptides)
• Qualitätsniveau: 200
• Form: powder
• Löslichkeit: methanol: water (1:1): 0.5 g/10 mL, clear
• εmax: ≥275 at 423-433 nm in water; ≥≥ 250 at 387-397 nm in water
• Anwendung(en): diagnostic assay manufacturing; hematology; histology
• Lagertemp.: room temp
• SMILES String: [Na+].[Na+].[O-]c1c(cc([N+]([O-])=O)c2ccc(cc12)S([O-])(=O)=O)[N+]([O-])=O
• InChI: 1S/C10H6N2O8S.2Na/c13-10-7-3-5(21(18,19)20)1-2-6(7)8(11(14)15)4-9(10)12(16)17;;/h1-4,13H,(H,18,19,20);;/q;2*+1/p-2
• InChIKey: CTIQLGJVGNGFEW-UHFFFAOYSA-L

Beschreibung

Anwendung

Naphthol yellow S has been used as a staining agent in fixed human embryonic stem cell-derived cardiomyocytes.

Biochem./physiol. Wirkung

Naphthol yellow S (NYS) is used as a stain for protein basic groups. It is an acidic dye and forms a NYS-protein complex at acidic pH. Combination of feulgen and NYS provides DNA to protein ratio.

Hinweis zur Analyse

λ_max. ∼428 nm/∼392 nm; E(1%,1 cm) ∼275-425/∼250-400 (H₂O)

Sicherheitshinweise

• Piktogramme: GHS08,GHS07
• Signalwort: Warning
• H-Sätze: H317,H373
• P-Sätze: P260 - P272 - P280 - P302 + P352 - P314 - P333 + P313
• Gefahreneinstufungen: Skin Sens. 1 - STOT RE 2
• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: WGK 2
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable
• Persönliche Schutzausrüstung: Eyeshields, Gloves, type N95 (US)