≥98% DA-67 Water-Soluble Chromogen for 666 nm Peroxide Detection

Name: ≥98% DA-67 Water-Soluble Chromogen for 666 nm Peroxide Detection
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Cat.No: IGM-HMM-0087 Datasheet

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Product Name	≥98% DA-67 Water-Soluble Chromogen for 666 nm Peroxide Detection
Catalog No.	IGM-HMM-0087
Description	Alta DiagnoTech DA-67 is a crystalline water-soluble chromogen that forms a blue compound in peroxidase-coupled hydrogen peroxide reactions.
Intended Use	For high-sensitivity hydrogen peroxide detection and biochemical reagent formulation.
Principle / Technology	In the presence of peroxidase, the chromogen reacts with hydrogen peroxide to form a blue compound whose absorbance change is measured at 666 nm.
Storage Conditions	Store sealed, dry and protected from light at 2-8°C; for long-term storage, keep protected from light at -25°C to -15°C.
Shelf Life	1 year
Package Specifications	Available in 10 mg, 1 g, 10 g and 100 g packs.
Product Form	Crystalline powder
Key Features	Good water solubility, high sensitivity, low interference from coexisting substances and good stability.
Purity	≥98%
Molecular Weight	408.45
Molecular Formula	C19H21N4NaO3S
Appearance	White to blue or green crystalline powder
Alias	10-(Carboxymethylaminocarbonyl)-3,7-bis(dimethylamino)phenothiazine sodium salt
Solubility	Water-soluble at 10 mg per 25 mL; may be prepared directly in water at concentrations of at least 1 mmol/L.
CAS Number	115871-18-6
Safety	For use in in vitro diagnostic products only; not for administration to humans or for in vivo experiments.
Product Type	Water-soluble chromogenic reagent
Function / Efficacy	Enables peroxidase-coupled detection of trace hydrogen peroxide without an additional color substrate.
Abbreviation	DA-67
Handling Precaution	Wear gloves and avoid inhalation or skin contact during handling.
Detection Wavelength	666 nm; molar absorptivity per hydrogen peroxide molecule: 9 × 10^4.

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For research use only, not for clinical use.