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Key Documents

SML2756

Sigma-Aldrich

Bremelanotide acetate

≥98% (HPLC)

Synonym(s):

Ac-Nle-Asp-His-D-Phe-Arg-Trp-Lys (Asp-Lys), acetate salt, Acetyl-[Nle4, Asp5, D-Phe7, Lys10]-cyclo-α-melanocyte, PT 141 acetate, PT-141 acetate, PT141 acetate

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About This Item

Empirical Formula (Hill Notation):
C50H68N14O10 · xC2H4O2
CAS Number:
Molecular Weight:
1025.16 (free base basis)
UNSPSC Code:
12352200
NACRES:
NA.77

Quality Level

Assay

≥98% (HPLC)

form

powder

storage condition

desiccated

color

white to off-white

shipped in

wet ice

storage temp.

−20°C

Biochem/physiol Actions

Bremelanotide (PT-141) is a brain-penetrant, alpha-melanocyte-stimulating hormone (α-MSH)-derived cyclic heptapeptide agonist toward melanocortin receptors, including MC1R, MC3R and MC4R (affinty = 10 nM by competitive binding against 0.2 nM NDP-α-MSH using human MC4R-expressing HEK-293). Bremelanotide induces cAMP accumulation in hMC4R-expressing HEK-293 cells and exhibits in vivo sexual arousal efficacy among both male (50 μg/kg intranasally or 50-500 pg/kg via lateral ventricle injection) and female rats (100-200 μg/kg sc or 800 μg/kg via lateral ventricle injection) by activating neurons in brain regions responsible for sexual function.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


Certificates of Analysis (COA)

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K L Aughton et al.
British journal of pharmacology, 155(2), 236-243 (2008-07-01)
Hypothalamic neuropeptides centrally modulate sexual arousal. However, the role of neuropeptides in peripheral arousal has been ignored. Vascular and non-vascular smooth muscle relaxation in the vagina is important for female sexual arousal. To date, in vitro studies have focused on
P B Molinoff et al.
Annals of the New York Academy of Sciences, 994, 96-102 (2003-07-10)
PT-141, a synthetic peptide analogue of alpha-MSH, is an agonist at melanocortin receptors including the MC3R and MC4R, which are expressed primarily in the central nervous system. Administration of PT-141 to rats and nonhuman primates results in penile erections. Systemic

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