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Chemical Structure| 62669-70-9 Chemical Structure| 62669-70-9

Structure of Rhodamine 123
CAS No.: 62669-70-9

Chemical Structure| 62669-70-9

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Rhodamine 123 is a cell membrane-permeable cationic fluorescent probe that specifically detects mitochondrial membrane potential and accumulates within the mitochondria, emitting strong fluorescence. At appropriate concentrations, it exhibits low cytotoxicity and is widely used to detect mitochondrial function in animal, plant cells, and microorganisms.

Synonyms: RH-123; R-22420; R-302

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Product Details of Rhodamine 123

CAS No. :62669-70-9
Formula : C21H17ClN2O3
M.W : 380.82
SMILES Code : O=C(C1=CC=CC=C1C2=C3C=CC(N)=CC3=[O+]C4=C2C=CC(N)=C4)OC.[Cl-]
Synonyms :
RH-123; R-22420; R-302
MDL No. :MFCD00012664

Safety of Rhodamine 123

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302
Precautionary Statements:P264-P270-P301+P312+P330-P501

Isoform Comparison

Biological Activity

Description
Rhodamine dyes, as membrane-permeable cationic fluorescent probes, specifically target mitochondrial membrane potentials, leading to their attachment to mitochondria and resultant bright fluorescence. Their cellular compatibility at specific concentrations allows for widespread use in identifying mitochondria across animal cells, plant cells, and microorganisms[1].

In Vitro:

Cell Line
Concentration Treated Time Description References
cholangiocytes 100 μM 5 min To evaluate the multidrug resistance protein 1 (MDR1) transport function of cholangiocytes. Results showed that rhodamine 123 was efficiently transported into bile duct-like structures in functional ductal organoids (FDOs), while similar transport was not observed in monolayer and dECM-HG culture systems. PMC10073412
HEI-OC1 cells 1 μM 30 min Measure mitochondrial membrane potential, results showed rhodamine 123 staining can be used to assess mitochondrial function. PMC6929624
granulosa cells (GCs) 10 μM 30 min Used to visualize mitochondrial membrane potential (MMP), results showed CDDP significantly reduced fluorescence intensity, indicating loss of membrane potential. PMC11401273
Human umbilical vein endothelial cells (HUVECs) 600 mg/mL 90 min To evaluate the effect of P-gp inhibitors on Rhodamine 123 accumulation. Results showed that in the BBB model, Verapamil and Cyclosporine A increased Rhodamine 123 accumulation by 14-fold and 8-fold, respectively. PMC5260004
hippocampal neurons 2 µM To assess changes in mitochondrial membrane potential, results showed that glutamate significantly affected the mitochondrial membrane potential, and ABPPs attenuated this effect of glutamate. PMC7034289

In Vivo:

Species
Animal Model
Administration Dosage Frequency Description References
Rat E19 fetuses, P4, P14 and adult (6-10 weeks) rats Intraperitoneal injection 2.5-20 mg/kg Single dose, sampled 30 minutes post-injection Investigated age-dependent differences in R123 transfer from blood to brain and CSF. Key findings: Maternal-fetal placental transfer was ~20%; 43% of fetal blood R123 reached brain, 38% entered CSF; Postnatal transfer decreased with age (brain: 43% at P4, 22% at P14, 9% in adults; CSF: 8% at P4/P14, 1% in adults); Total maternal-to-fetal brain transfer was ~9%, matching adult BBB transfer (9%); Newborn brain uptake was 3-fold higher than adults (p<0.05) without placental protection. PMC7871379

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Bio Calculators
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2.63mL

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2.63mL

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