B581

B581
  • CAS No.:149759-96-6

Important Notice

  1. This product is a chemical product/pharmaceutical intermediate. It is not a drug, an active pharmaceutical ingredient (API), or a pharmaceutical-grade material. It has not been granted a drug approval number or a Chemical Drug Substance Approval Notice, has not passed drug-related review and approval, and is not manufactured, tested, or released in accordance with pharmaceutical GMP.
  2. This product is intended solely for non-clinical research, process development, quality studies, further chemical processing, or chemical synthesis. It must not be used in drug-product manufacturing, clinical trials, clinical diagnosis, or administration to humans or animals, or be sold, used as an input, submitted for regulatory filing, or released as an API or pharmaceutical material.
  3. The purchaser must not use this product, or supply it to another party, for personal consumption, sports or fitness, weight loss, health supplements, food, or animal feed.
Other grades of this product :
B581 Basic information
Product Name:B581
Synonyms:CYS-((R))-VAL-((R))-PHE-MET;FTASE INHIBITOR I;H-CYS-(R)-VAL-(R)-PHE-MET-OH;B581;N-[(S)-2-((R)-2-AMINO-3-MERCAPTO-PROPYLAMINO)-3-METHYL-BUTYL]-PHE-MET-OH;N-[2(S)-(2(R)-2-AMINO-3-MERCAPTOPROPYLAMINO)-3-METHYLBUTYL]-L-PHENYLALANYL-L-METHIONINE;N-[2(S)-[2(R)-AMINO-3-MERCAPTOPROPYLAMINO]-3-METHYL-BUTYL]-PHE-MET;N-[2(S)-[2(R)-AMINO-3-MERCAPTOPROPYLAMINO]-3-METHYLBUTYL]-PHE-MET-OH
CAS:149759-96-6
MF:C22H38N4O3S2
MW:470.69
EINECS:
Product Categories:
Mol File:149759-96-6.mol
B581 Chemical Properties
Boiling point 716.1±60.0 °C(Predicted)
density 1.161±0.06 g/cm3(Predicted)
storage temp. −20°C
solubility H2O: soluble
form solid
pka3.04±0.10(Predicted)
color white
Safety Information
Safety Statements 22-24/25
WGK Germany 3
MSDS Information
ProviderLanguage
SigmaAldrich English
B581 Usage And Synthesis
DescriptionFTase inhibitor I is a potent inhibitor of farnesyltransferase (FTase; IC50 = 21 nM) that is greater than 30-fold selective for FTase over geranylgeranyl transferase (GGTase; IC50 = 790 nM). It prevents farnesylation of Ras and inhibits proliferation of cells transformed by Ras farnesylation. In a dog model of subarachnoid hemorrhage, it reduces GTP-Ras in spastic basilar arteries, decreases angiographic vasospasm, and improves clinical scores.
UsesFTase Inhibitor I is a potent, selective, peptidomimetic FTase inhibitor.
DefinitionChEBI: A dipeptide obtained from the tetrapeptide Cys-Val-Phe-Met by reduction of the amide carbonyl groups of the Cys and Val residues.
Enzyme inhibitorThis cell-permeable CAAX peptidomimetic (FW = 470.70 g/mol; FWtrifluoracetate-salt = 583.71 g/mol; CAS 149759-96-6), named as N-[2(S)- (2(R)-2-amino-3-mercaptopropylamino)-3-methylbutyl]-L-phenylalanyl-L methionine), binds to and prevents protein farnesyltransferase (IC50 = 21 nM) from interacting with C-terminal L-Cys-L-Val-L-Phe-L-Met substrate recognition sequences that are present in its natural substrates. Otherwise hydrophilic proteins associate with membranes by means of enzymatic attachment of hydrophobic moieties to their C-termini. Whereas prenylation occurs in the cytosol, post-prenylation processing is accomplished on the cytoplasmic surface of the endoplasmic reticulum and Golgi apparatus. B581 inhibits prenylation and processing of H-ras and lamin A. B581 specifically blocks farnesylated, but not geranylgeranylated or myristylated, oncogenic ras signaling and transformation.
B581 Preparation Products And Raw materials

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