344270
Forskolin
from Coleus forskohlii, ≥99% (HPLC), crystalline solid, positive inotropic agent, Calbiochem
Synonym(s):
Forskolin, Coleus forskohlii, 7β-Acetoxy-8,13-epoxy-1α,6β,9α-trihydroxy-labd-14-en-11-one, Colforsin
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All Photos(1)
About This Item
Empirical Formula (Hill Notation):
C22H34O7
CAS Number:
Molecular Weight:
410.50
MDL number:
UNSPSC Code:
12352200
NACRES:
NA.77
Recommended Products
product name
Forskolin, Coleus forskohlii,
Assay
≥99% (HPLC)
Quality Level
form
crystalline solid
manufacturer/tradename
Calbiochem®
storage condition
OK to freeze
color
white to off-white
solubility
DMSO: 5 mg/mL
shipped in
ambient
storage temp.
10-30°C
InChI
1S/C22H34O7/c1-8-19(5)11-14(25)22(27)20(6)13(24)9-10-18(3,4)16(20)15(26)17(28-12(2)23)21(22,7)29-19/h8,13,15-17,24,26-27H,1,9-11H2,2-7H3/t13-,15-,16-,17-,19-,20-,21+,22-/m0/s1
InChI key
OHCQJHSOBUTRHG-KGGHGJDLSA-N
General description
A cardioactive diterpene isolated from the Indian plant Coleus forskolii. At low doses, acts as a positive inotropic agent in dogs, cats, spontaneously hypertensive and normal rats, and isolated guinea pig heart. At higher doses, acts as a hypotensive and vasodilatory agent due to its action as a smooth muscle relaxant. No major side effects are observed at effective doses. Rapid and reversible activator of adenylate cyclase (EC50 = 4 µM) in membranes and intact cells. Does not affect the activity of guanylate cyclase or cyclic nucleotide phophodiesterases. The exact mechanism of forskolin′s positive inotropic effect is unknown but may be related to a cAMP-dependent increase in Na+ permeability, which results in indirect augmentation of Ca2+ release. Inhibits MAP kinase in rat renal mesangial cells (IC50 = 25 µM). Also acts as a Hh pathway antagonist. Shown to inhibit apoptosis in cerebellar granule cells and to induce apoptosis in resting human B-lymphocytes.
The major cell-permeable diterpene isolated from the Indian plant Coleus forskohlii. At low doses, it acts as a positive inotropic agent. At higher doses, it serves as a hypotensive and vasodilatory agent due to its actions as a smooth muscle relaxant. No major side effects are observed at effective doses. Forskolins pharmacological activities are due to its activation of adenylate cyclase (EC50 = 4 µM), resulting in increased cAMP levels. The exact mechanism of forskolins positive inotropic effect is unknown but may be related to a cAMP-dependent increase in Na+ permeability that results in indirect augmentation of Ca2+ release. Inhibits MAP kinase in rat renal mesangial cells (IC50 = 25 µM). Also acts as a Hh pathway antagonist. Shown to inhibit apoptosis in cerebellar granule cells and to induce apoptosis in resting human B lymphocytes.
Biochem/physiol Actions
Cell permeable: yes
Product does not compete with ATP.
Reversible: no
Target IC50: 25 µM inhibiting MAP kinase in rat renal mesangial cells; EC50 = 4 µM for activation of adenylate cyclase
Caution
Ethanol is reported to inhibit forskolin-mediated activation of adenylate cyclase. DMSO is the recommended solvent; at ≤5% DMSO final concentration, little inhibition of the adenylate cyclase activation will occur.
Warning
Toxicity: Harmful (C)
Reconstitution
Following reconstitution, store in the refrigerator (4°C). DMSO stock solutions are stable for up to 4 months at 4°C.
Other Notes
D′Orazio, J.A., et al. 2006. Nature443, 340.
Noveen, A., et al. 1996. Biochem. Biophys. Res. Commun.219, 180.
Galli, C., et al. 1995. J. Neurosci.15, 1172.
Li, X., et al. 1995. Am. J. Physiol.269, C986.
Lomo, J., et al. 1995. J. Immunol.154, 1634.
Uneyama, H., et al. 1993. J. Biol. Chem.268, 168.
Laurenza, A., et al. 1989. Trends Pharmacol. Sci.10, 442.
Adashi, E.Y., and Resnick, C.E. 1986. J. Cell. Biochem.31, 217.
Seamon, K.B., and Daly, J.W. 1986. Adv. Cyclic Nucleotide Protein Phosphorylation Res.20, 1.
Huang, R., et al. 1982. Cyclic Nucleotide Res.8, 385.
Metzger, H., and Lindner, E. 1981. IRCS Med. Sci. Biochem. Cardiovasc. System Pharmacol.9, 99.
Noveen, A., et al. 1996. Biochem. Biophys. Res. Commun.219, 180.
Galli, C., et al. 1995. J. Neurosci.15, 1172.
Li, X., et al. 1995. Am. J. Physiol.269, C986.
Lomo, J., et al. 1995. J. Immunol.154, 1634.
Uneyama, H., et al. 1993. J. Biol. Chem.268, 168.
Laurenza, A., et al. 1989. Trends Pharmacol. Sci.10, 442.
Adashi, E.Y., and Resnick, C.E. 1986. J. Cell. Biochem.31, 217.
Seamon, K.B., and Daly, J.W. 1986. Adv. Cyclic Nucleotide Protein Phosphorylation Res.20, 1.
Huang, R., et al. 1982. Cyclic Nucleotide Res.8, 385.
Metzger, H., and Lindner, E. 1981. IRCS Med. Sci. Biochem. Cardiovasc. System Pharmacol.9, 99.
Legal Information
CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany
Signal Word
Warning
Hazard Statements
Precautionary Statements
Hazard Classifications
Acute Tox. 4 Dermal
Storage Class Code
11 - Combustible Solids
WGK
WGK 3
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