D1054
Dihydrorhodamine 123
≥95% purity, powder
Synonym(s):
DHR 123; Methyl 2-(3,6-diamino-9H-xanthen-9-yl)benzoate; Benzoic acid, 2-(3,6-diamino-9H-xanthen-9-yl)-, methyl ester
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About This Item
Empirical Formula (Hill Notation):
C21H18N2O3
CAS Number:
Molecular Weight:
346.38
Beilstein:
5989965
MDL number:
UNSPSC Code:
12171500
PubChem Substance ID:
NACRES:
NA.47
Product Name
Dihydrorhodamine 123, ≥95%
Quality Level
Assay
≥95%
form
powder
technique(s)
titration: suitable
color
pink
solubility
DMSO: >5 mg/mL
application(s)
diagnostic assay manufacturing
hematology
histology
storage temp.
−20°C
SMILES string
COC(=O)c1ccccc1C2c3ccc(N)cc3Oc4cc(N)ccc24
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General description
Dihydrorhodamine 123 (DHR123) is an uncharged non-fluorescent dye and a derivative of rhodamine 123 (R123). Dihydrorhodamine 123 (DHR123) is oxidized to fluorescent R123 within cells in the presence of reactive oxygen species and it localizes in mitochondria. It is an analog of 2,7-Dichlorodihydrofluorescein (DCDHF), lipophilic and diffuses through cell membrane.
Application
Dihydrorhodamine 123 (DHR) has been used for the detection of free intracellular radicals or ROS (reactive oxygen species) in head kidney-derived macrophages. It has also been used in DHR assay in red blood cells and in oxidative burst assay in neutrophils.
Biochem/physiol Actions
Dihydrorhodamine 123 detects superoxide ions at the single-cell level and is used for probing neutrophils superoxide generation in a respiratory burst event. It is also used for measuring oxidative stress in macrophages and human spermatozoa.
Dihydrorhodamine 123 is used for the detection of ROS (reactive oxygen species). Presence of ROS oxidizes dihydrorhodamine 123 to the fluorescent derivative rhodamine 123. The reaction happens in the presence of a peroxidase or a similar catalyst.
Substrates
Peroxidase substrate
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
dust mask type N95 (US), Eyeshields, Gloves
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