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Chemical Structure| 11103-72-3 Chemical Structure| 11103-72-3

Structure of Ruthenium red
CAS No.: 11103-72-3

Chemical Structure| 11103-72-3

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Ruthenium red, a polycationic dye, is an inhibitor of voltage sensitive calcium channel and used in histology to stain aldehyde fixed.

Synonyms: Ammoniated ruthenium oxychloride; C.I. 77800

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Product Details of Ruthenium red

CAS No. :11103-72-3
Formula : Cl6H42N14O2Ru3
M.W : 786.35
SMILES Code : [Ru+2]O[Ru+2]O[Ru+2].N.N.N.N.N.N.N.N.N.N.N.N.N.N.[Cl-].[Cl-].[Cl-].[Cl-].[Cl-].[Cl-]
Synonyms :
Ammoniated ruthenium oxychloride; C.I. 77800
MDL No. :MFCD00011479

Safety of Ruthenium red

GHS Pictogram:
Signal Word:Warning
Hazard Statements:H302-H315-H319
Precautionary Statements:P261-P305+P351+P338

Isoform Comparison

Biological Activity

In Vitro:

Cell Line
Concentration Treated Time Description References
Rabbit ventricular cardiomyocytes 4 µM 10 minutes To study the inhibitory effect of ruthenium red on Ca2+ spark events. Results showed that 4 μM RuR completely inhibited Ca2+ spark events by 10 min. J Physiol. 2010 Dec 1;588(Pt 23):4731-42
Cerebellar granule neurons 5 µM 1-2 minutes To study the inhibitory effect of ruthenium red on TASK-3-like K+ channels in cerebellar granule neurons. Results showed that ruthenium red significantly inhibited channel activity in 42% of patches (77±5%) but had a minimal effect in 58% of patches (5±4%), indicating the presence of both TASK-3 homomers and TASK-1/TASK-3 heteromers. J Physiol. 2004 Jan 1;554(Pt 1):64-77
COS-7 cells 5 µM 1-2 minutes To study the inhibitory effect of ruthenium red on TASK-3 and TASK-1/TASK-3 heteromers. Results showed that ruthenium red significantly inhibited TASK-3 (78±7%) but had a minimal effect on TASK-1/TASK-3 heteromers (3±4%). J Physiol. 2004 Jan 1;554(Pt 1):64-77
Sarcoplasmic reticulum vesicles 5 µM 15 minutes To study the effect of different Ruthenium red concentrations on Ca2+ binding, it was found that Ruthenium red could differentiate between two distinct Ca2+-binding sites. Biochem J. 1992 Nov 1;287 ( Pt 3)(Pt 3):767-74
Sarcoplasmic reticulum vesicles 100 µM 15 minutes To study the effect of Ruthenium red on the equilibrium of Ca2+ binding, it was found that Ruthenium red decreased the affinity for Ca2+ binding but did not change the maximum binding. Biochem J. 1992 Nov 1;287 ( Pt 3)(Pt 3):767-74
Chicken gizzard smooth muscle cells 6.8 µM to 68 µM 2 minutes To study the effect of RuR on purified smooth muscle myosin phosphatase (MP) activity, results showed that RuR inhibited MP activity in a concentration-dependent manner with an IC50 of approximately 23 μM. Biochem J. 2000 Aug 1;349 Pt 3(Pt 3):797-804
Rabbit ventricular cardiomyocytes 4 µM 2-4 minutes To study the inhibitory effect of ruthenium red on Ca2+ waves and Ca2+ spark events. Results showed that 4 μM RuR inhibited Ca2+ waves in 50% of cardiomyocytes by 2 min and in 100% by 4 min. J Physiol. 2010 Dec 1;588(Pt 23):4731-42
Rabbit iris sphincter muscle cells 100 µM 30 min Ruthenium red produced concentration-dependent contractions, which were inhibited by tachykinin receptor blockade, indicating its action was mediated via C-fibres. Br J Pharmacol. 1993 Nov;110(3):1073-8
Guinea-pig isolated whole heart 5 µM 30 minutes To study the effect of ruthenium red on capsaicin-induced CGRP-LI release and cardiac contractile activity, results showed that ruthenium red completely blocked capsaicin-induced CGRP-LI release and changes in contractile activity. Br J Pharmacol. 1991 Oct;104(2):305-10
Guinea-pig isolated right atrium 2.5 µM 30 minutes To study the effect of ruthenium red on capsaicin-induced CGRP-LI release, results showed that ruthenium red markedly attenuated capsaicin-evoked CGRP-LI release but had no clear-cut effects on atrial contractile tension or rate. Br J Pharmacol. 1991 Oct;104(2):305-10

In Vivo:

Species
Animal Model
Administration Dosage Frequency Description References
New Zealand White rabbits Skin oedema and increased blood flow model Intradermal injection 0.1 to 100 nmol/site Single injection, observed for 30 min (oedema) or 15 min (blood flow) Ruthenium red selectively inhibited capsaicin-induced oedema and increased blood flow but had no effect on responses induced by other mediators (e.g., bradykinin, FMLP, PAF, histamine, and CGRP). Br J Pharmacol. 1990 Jan;99(1):7-8
Rats Anesthetized rat trachea model Aerosol administration 10 mM 2 minutes Ruthenium red partially reduced the plasma extravasation evoked by cigarette smoke but did not affect the responses to hypertonic saline or substance P. Br J Pharmacol. 1993 Mar;108(3):646-50
Male Wistar rats Perfused heart model Perfusion medium 2.5 µg/mL 5 min preperfusion followed by continued perfusion Inhibit PDH activation by positive inotropic agents without affecting contractile force or phosphorylase a content Biochem J. 1983 Aug 15;214(2):581-5
Guinea-pig Isolated heart and atrial model Perfusion 2.5x10-6M (atria) and 5x10-6M (whole heart) Single administration, lasting 5 minutes To study the effect of ruthenium red on capsaicin- and resiniferatoxin-induced excitation of cardiac sensory nerves, results showed that ruthenium red selectively inhibited capsaicin- and resiniferatoxin-induced CGRP-LI release and cardiostimulatory action. Br J Pharmacol. 1991 Oct;104(2):305-10

Protocol

Bio Calculators
Preparing Stock Solutions 1mg 5mg 10mg

1 mM

5 mM

10 mM

1.27mL

0.25mL

0.13mL

6.36mL

1.27mL

0.64mL

12.72mL

2.54mL

1.27mL

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