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5.08316

Sigma-Aldrich

CTAP

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Synonym(s):
CTAP, µ opioid receptor antagonist, CTAP
Empirical Formula (Hill Notation):
C51H69N13O11S2
CAS Number:
103429-32-9
Molecular Weight:
1104.30
MDL number:
MFCD00671434
UNSPSC Code:
12352200
NACRES:
NA.77

Assay

≥95% (HPLC)

Quality Level

100

form

solid

potency

3.5 nM IC50

manufacturer/tradename

Calbiochem®

storage condition

OK to freeze
protect from light

color

off-white

solubility

water: soluble

storage temp.

−20°C

InChI

1S/C51H69N13O11S2/c1-26(65)39(42(53)68)62-49(75)41-51(3,4)77-76-25-38(61-43(69)33(52)21-28-11-6-5-7-12-28)47(73)59-36(22-29-16-18-31(67)19-17-29)45(71)60-37(23-30-24-57-34-14-9-8-13-32(30)34)46(72)58-35(15-10-20-56-50(54)55)44(70)63-40(27(2)66)48(74)64-41/h5-9,11-14,16-19,24,26-27,33,35-41,57,65-67H,10,15,20-23,25,52H2,1-4H3,(H2,53,68)(H,58,72)(H,59,73)(H,60,71)(H,61,69)(H,62,75)(H,63,70)(H,64,74)(H4,54,55,56)/t26-,27-,33-,35+,36+,37-,38+,39+,40+,41-/m1/s1

InChI key

OFMQLVRLOGHAJI-FGHAYEPSSA-N

General description

A highly potent octapeptide that acts as a selective and brain penetrating bioavailable µ opioid receptor antagonist (IC50 = 3.5 nM). Used in studies of reward systems and additions.

Biochem/physiol Actions

Primary Target
u Opioid receptpr

Warning

Toxicity: Standard Handling (A)

Sequence

D-Phe-Cys-Tyr-D-Trp-Arg-Thr-Pen-Thr-NH2 (2-7 disulfide bond)

Reconstitution

Following reconstitution, aliquot and freeze (-20°C). Stock solutions are stable for up to 3 months at -20°C.

Other Notes

Perry, C., et al., 2013. Behav. Neurosci.127, 535.
Burkett, J. et al. 2011. Neuropsychopharm.36, 2200.
Steinmiller, L., et al., 2008. Psychopharmacol. (Berl).195, 497.
Sterious, S., et al., 2003. J. Pharmacol. Exp. Ther.304, 301.
Abbruscato, T., et al. 1997. J. Pharmacol.280, 402.

Legal Information

CALBIOCHEM is a registered trademark of Merck KGaA, Darmstadt, Germany

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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