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C4801

Sigma-Aldrich

Cyclo(7-aminoheptanoyl-Phe-D-Trp-Lys-Thr[Bzl])

≥95% (HPLC), powder

Synonym(s):

Cyclosomatostatin

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About This Item

Empirical Formula (Hill Notation):
C44H57N7O6
CAS Number:
Molecular Weight:
779.97
MDL number:
UNSPSC Code:
12352200
PubChem Substance ID:
NACRES:
NA.32

Quality Level

Assay

≥95% (HPLC)

form

powder

color

white

solubility

H2O: 1 mg/mL, clear, colorless

storage temp.

−20°C

SMILES string

O=C(N[C@H](C(N[C@@]1([H])[C@@H](C)OCC2=CC=CC=C2)=O)CCCCN)[C@H](NC([C@@H](NC(CCCCCCNC1=O)=O)CC3=CC=CC=C3)=O)CC4=CNC5=C4C=CC=C5

InChI

1S/C44H57N7O6/c1-30(57-29-32-18-8-5-9-19-32)40-44(56)46-25-15-3-2-10-23-39(52)48-37(26-31-16-6-4-7-17-31)42(54)50-38(27-33-28-47-35-21-12-11-20-34(33)35)43(55)49-36(41(53)51-40)22-13-14-24-45/h4-9,11-12,16-21,28,30,36-38,40,47H,2-3,10,13-15,22-27,29,45H2,1H3,(H,46,56)(H,48,52)(H,49,55)(H,50,54)(H,51,53)/t30-,36+,37+,38-,40+/m1/s1

InChI key

YHVHQZYJGWGAKN-ZUWUZHNASA-N

Gene Information

human ... SST(6750)
mouse ... SST(20604)
rat ... SST(24797)

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Amino Acid Sequence

cyclo-Phe-Trp-Lys-Thr-Bzl

Application

Cyclo(7-aminoheptanoyl-Phe-D-Trp-Lys-Thr[Bzl]) has been used as a somatostatin antagonist to study its effects on sleep in rats to infer the role of endogenous somatostatin in the physiologic modulation of REM sleep (REMS) , as an somatostatin (SST) antagonist to study its effects on elemental-induced intestinal atrophy in rats , as an SST receptor antagonist to eliminate the effect of somatostatin on catecholamine .

Biochem/physiol Actions

Cyclo(7-aminoheptanoyl-Phe-D-Trp-Lys-Thr[Bzl]) (cSSTA) is a cyclic somatostatin (SST) analog and is a somatostatin receptor antagonist. It is involved in blocking the effect of somatostatin, such as airway β-adrenergic function and regulation of acetylcholine release. cSSTA is also involved in blocking the effect of somatostatin of hormone release and corticotropin-releasing factor-induced suppression of gastric emptying.
Cyclo(7-aminoheptanoyl-Phe-D-Trp-Lys-Thr[Bzl]), also known as cyclosomatostatin. Inhibition of somatostatin receptors by cyclosomatostatin induces catalepsy in rats.

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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M Endou et al.
The Journal of pharmacology and experimental therapeutics, 250(2), 726-733 (1989-08-01)
The effects of somatostatin on the contractile response of guinea pig cardiac preparations were investigated and compared with those of carbachol and adenosine. Somatostatin produced a concentration-dependent negative inotropic effect in the left atria, which was accompanied by a decrease
J Toppila et al.
Pharmacology, biochemistry, and behavior, 66(4), 721-727 (2000-09-06)
In order to study the role of endogenous somatostatin in the physiologic modulation of REM sleep (REMS), we measured the effect of intracerebroventricular (ICV) injection of somatostatin antagonist (SA) cyclo-(7-aminoheptanoyl-phe-d-trp-lys-thr(bzl)) on sleep in rats. The effect of ICV SA was
H S Park et al.
American journal of physiology. Gastrointestinal and liver physiology, 279(4), G677-G682 (2000-09-27)
Because GABA and its related enzymes have been determined in beta-cells of pancreas islets, effects of GABA on pancreatic exocrine secretion were investigated in the isolated, perfused rat pancreas. GABA, given intra-arterially at concentrations of 3, 10, 30, and 100
L Fung et al.
Endocrinology, 134(6), 2376-2382 (1994-06-01)
This study was designed to examine whether one or both principle molecular forms of somatostatin (SLI), somatostatin-28 (S-28) and somatostatin-14 (S-14), mediate inhibition of stimulated gastric acid by intestinal fat and to determine whether the mode of action includes activation
P Rebuffat et al.
The Journal of steroid biochemistry and molecular biology, 48(4), 353-360 (1994-03-01)
The effect of SRIF and its antagonist cyclo(7-aminoheptanonyl-Phe-D-Trp-Lys-Thr magnitude of Bzl)(SRIF-A) were studied in sham-operated and bilaterally adrenalectomized rats bearing ACTH- and angiotensin II (ANG-II)-responsive adrenocortical autotransplants. SRIF-A (10(-5) M) completely annulled SRIF (10(-6) M)-induced inhibition of ANG-II (10(-8) M)-evoked

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