Date published: 2026-4-24

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RH 155 (CAS 254451-42-8)

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Alternate Names:
Neurodye RH-155
Application:
RH 155 is a colorimetric indicator for membrane potential
CAS Number:
254451-42-8
Molecular Weight:
950.26
Molecular Formula:
C49H71N7O8S2
For Research Use Only. Not Intended for Diagnostic or Therapeutic Use.
* Refer to Certificate of Analysis for lot specific data.

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RH 155 is a neuron-tracing dye. It is used for monitoring membrane potential, synaptic activity and ion channel activity of neurons. RH-155 has been utilized to examine the effects of L-DOPA on neuronal activity within the buccal ganglia of Aplysia, a model organism. The dye allows for the recording of changes in light absorbance that correlate with neuronal action potentials, offering high spatial and temporal resolution for observing the dynamic patterns of neuronal activity.


RH 155 (CAS 254451-42-8) References

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  3. Glutamate release increases during mossy-CA3 LTP but not during Schaffer-CA1 LTP.  |  Kawamura, Y., et al. 2004. Eur J Neurosci. 19: 1591-600. PMID: 15066155
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  5. Multiple site optical recording of transmembrane voltage (MSORTV), single-unit recordings, and evoked field potentials from the olfactory bulb of skate (Raja erinacea).  |  Cinelli, AR. and Salzberg, BM. 1990. J Neurophysiol. 64: 1767-90. PMID: 1981575
  6. Optogenetic interrogation of neural circuits: technology for probing mammalian brain structures.  |  Zhang, F., et al. 2010. Nat Protoc. 5: 439-56. PMID: 20203662
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  8. Influence of substrate on the distribution of calcium channels in identified leech neurons in culture.  |  Ross, WN., et al. 1988. Proc Natl Acad Sci U S A. 85: 4075-8. PMID: 2453887
  9. Unique Configurations of Compression and Truncation of Neuronal Activity Underlie l-DOPA-Induced Selection of Motor Patterns in Aplysia.  |  Neveu, CL., et al. 2017. eNeuro. 4: PMID: 29071298
  10. Optical recording of electrical activity from parallel fibres and other cell types in skate cerebellar slices in vitro.  |  Konnerth, A., et al. 1987. J Physiol. 393: 681-702. PMID: 3446807
  11. Enhanced fast synaptic transmission and a delayed depolarization induced by transient potassium current blockade in rat hippocampal slice as studied by optical recording.  |  Barish, ME., et al. 1996. J Neurosci. 16: 5672-87. PMID: 8795623
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  13. Mapping membrane potential transients in crayfish (Procambarus clarkii) optic lobe neuropils with voltage-sensitive dyes.  |  Yagodin, S., et al. 1999. J Neurophysiol. 81: 334-44. PMID: 9914293

Ordering Information

Product NameCatalog #UNITPriceQtyFAVORITES

RH 155, 5 mg

sc-499432
5 mg
$474.00