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CTOP TFA

Cat. No. M10240
CTOP TFA Structure
Synonym:

D-PHE-CYS-TYR-D-TRP-ORN-THR-PEN-THR-NH2

Size Price Availability Quantity
1mg USD 247  USD247 In stock
5mg USD 745  USD745 In stock
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Quality Control & Documentation
Biological Activity

CTOP TFA is a peptide that acts as a potent and selective μ opioid receptor antagonist, with Ki values of 0.96 and >10,000 nM for μ and δ receptors, respectively. CTOP TFA increases K+ currents in rat locus ceruleus neurons in vitro via a μ receptor independent mechanism.

Chemical Information
Molecular Weight 1176.28
Formula C52H68F3N11O13S2
CAS Number 103429-31-8 (free base)
Solubility (25°C) Water 45 mg/mL
Storage -20°C, protect from light, sealed
Conversion of different model animals based on BSA (PMID: 27057123)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.

References

[1] A Badiani, et al. Brain Res. Intra-VTA injections of the mu-opioid antagonist CTOP enhance locomotor activity

[2] K Gulya, et al. Eur J Pharmacol. Central effects of the potent and highly selective mu opioid antagonist D-Phe-Cys-Tyr-D-Trp-Orn-Thr-Pen-Thr-NH2 (CTOP) in mice

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Keywords: CTOP TFA, D-PHE-CYS-TYR-D-TRP-ORN-THR-PEN-THR-NH2 supplier, Opioid Receptor, inhibitors, activators


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