5(6)-Carboxyeosin

• Catalog No.: 21883
• CAS Number: 132201-84-4
• M. F.: C42H16Br8O14
• M. W.: 1383.80004
• Purity: ≥90% (HPCE)

SYNONYMS

• IUPAC name: 2-(2,4,5,7-tetrabromo-6-hydroxy-3-oxo-3H-xanthen-9-yl)benzene-1,3-dicarboxylic acid; 2-(2,4,5,7-tetrabromo-6-hydroxy-3-oxo-3H-xanthen-9-yl)benzene-1,4-dicarboxylic acid
• IUPAC Traditional name: 2-(2,4,5,7-tetrabromo-3-hydroxy-6-oxoxanthen-9-yl)benzene-1,3-dicarboxylic acid; 2-(2,4,5,7-tetrabromo-3-hydroxy-6-oxoxanthen-9-yl)benzene-1,4-dicarboxylic acid
• Synonyms: 5(6)-Carboxy-2′,4′,5′,7′-tetrabromofluorescein

DATABASE IDS

• CAS Number: 132201-84-4
• MDL Number: MFCD00467490

PROPERTIES

• Empirical Formula (Hill Notation): C21H8Br4O7
• Grade: for fluorescence
• Purity: ≥90% (HPCE)
• pKa: 3.6
• Fluorescence: λex 519 nm; λem 542 nm in 0.1 M Tris pH 9.0
• Melting Point: ≥220 °C(lit.)
• Solubility: DMF: soluble
• Solubility: DMSO: soluble
• Solubility: H2O: soluble (pH ≥ 6)
• GHS Signal Word: Warning
• GHS Hazard statements: H315-H319-H335
• European Hazard Symbols: Irritant (Xi)
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves
• GHS Precautionary statements: P261-P305 + P351 + P338
• Risk Statements: 36/37/38
• Safety Statements: 26-36
• Storage Temperature: 2-8°C
• German water hazard class: 3

DETAILS

Description (English)

Application
suitable as pH-indicator
Other Notes
Fluorescent pH indicator for the acidic range, and fluorescent label for amine modification and protein conjugation1

Description (简体中文)

Application
suitable as pH-indicator
Other Notes
Fluorescent pH indicator for the acidic range, and fluorescent label for amine modification and protein conjugation1