Description Mechanism of action Uses Pharmacokinetics Adverse reactions
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Leuprorelin

Description Mechanism of action Uses Pharmacokinetics Adverse reactions
Leuprorelin Structure
Leuprorelin
  • CAS No.53714-56-0
  • Chemical Name:Leuprorelin
  • CBNumber:CB8398455
  • Molecular Formula:C59H84N16O12
  • Formula Weight:1209.4
  • MOL File:53714-56-0.mol
Leuprorelin Property
  • alpha D25 -31.7° (c = 1 in 1% acetic acid)
  • Density 1.44±0.1 g/cm3(Predicted)
  • storage temp. −20°C
  • solubility DMSO (Slightly), Methanol (Slightly), Water (Slightly)
  • pka 9.82±0.15(Predicted)
  • Water Solubility Soluble in water at 1mg/ml
  • Stability Hygroscopic
  • InChIKey RGLRXNKKBLIBQS-VAZQWRJQNA-N
  • CAS DataBase Reference 53714-56-0(CAS DataBase Reference)
  • FDA UNII EFY6W0M8TG
  • ATC code L02AE02
Safety
Hazard and Precautionary Statements (GHS)
  • Symbol(GHS)
  • Signal wordDanger
  • Hazard statements H360
  • Precautionary statements P201-P280-P308+P313

Leuprorelin Chemical Properties,Usage,Production

  • Description Leuprorelin(Leuprolide ) is a synthetic water-soluble nonapeptide with both ends closed, and also a highly active analogue of luteinizing hormone releasing hormone (LHRH or GnRH) produced by the hypothalamus. It can stimulate the pituitary gland to secrete gonadotropins and induce the production of steroids in the reproductive organs. 
  • Mechanism of action Leuprorelin is a nonapeptide synthetic analogue of Luteinizing Hormone Releasing Hormone (LHRH), which can promote the release of follicle stimulating hormone from the anterior pituitary, thereby reducing the increased testosterone concentration to castrate levels. When the administration is stopped, gonadotropins and androgens can return to normal concentrations.
  • Uses Leuprorelin is a nonapeptide synthetic analogue of gonadotropin (GnRH), which can promote the release of luteinizing hormone (LHRH) and follicle stimulating hormone (FSH) from the anterior pituitary, regulate the secretion of gonadal hormones, and increase the serum levels of testosterone and dihydrotestosterone. Concentration, so as to achieve the function of treating reproductive system diseases. It is used to treat prostate cancer, uterine fibroids, ovarian cysts, breast cancer and cryptorchidism in children.
  • Pharmacokinetics Leuprolide acetate(Leuprorelin) is ineffective orally. Good absorption by subcutaneous or intramuscular injection. A single subcutaneous injection of 3.75mg, the blood concentration of 1 to 2 days peaked at 1 to 2ng/ml. For prostate cancer, 3.75mg is injected subcutaneously each time, once every 4 Chemicalbook weeks, for a total of 3 injections, reaching a steady-state blood concentration of 0.1-1ng/ml. This product is hydrolyzed into 4 degradation products in the body and excreted by the kidneys. The urinary excretion rates of the original drug and metabolites were 2.9% and 1.5% after a single subcutaneous injection 28 days.
  • Adverse reactions The main side effects of Leuprorelin are fever, heat sensation and elevated AST, ALT, γ-GTP and AKP. Sometimes there are facial flushing, sweating, loss of libido, impotence, feminized breasts, testicular atrophy, perineal discomfort and other endocrine system phenomena; abnormal electrocardiogram and increased ratio of heart and chest, bone pain, shoulder, lower back, limb pain, Urinary retention, frequent urination, hematuria, nausea, vomiting, loss of appetite, rash, itching and other allergic reactions and pain, induration, and redness at the injection site. Rarely, edema, chest pressure, chills, tiredness, weight gain, abnormal perception, tinnitus, hearing loss, TG, uric acid and BUN are increased.
  • Chemical Properties Hygroscopic, white or almost white powder.
  • Originator Eligard,Atrix Laboratories, Inc.
  • Uses Highly active luteinizing hormone releasing hormone (LHRH) agonist
  • Uses Gonadotropin releasing hormone (gonadorelin) analogue; treatment of prostate cancer.
  • Definition ChEBI: An oligopeptide comprising pyroglutamyl, histidyl, tryptophyl, seryl, tyrosyl, D-leucyl, leucyl, arginyl, and N-ethylprolinamide residues joined in sequence. Leuprorelin is a synthetic nonapeptide analogue of gonadotropin-releasi g hormone, and is used as a subcutaneous hydrogel implant (particularly as the acetate salt) for the treatment of prostate cancer and for the suppression of gonadal sex hormone production in children with central precocious puberty.
  • Indications Leuprolide is a potent LH-RH agonist for the first several days to a few weeks after initiation of therapy, and therefore, it initially stimulates testicular and ovarian steroidogenesis. Because of this initial stimulation of testosterone production, it is recommended that patients with prostatic cancer be treated concurrently with leuprolide and the antiandrogen flutamide (discussed earlier). Leuprolide is generally well tolerated, with hot flashes being the most common side effect.
  • Therapeutic Function Antineoplastic
  • Synthesis The synthesis process of Leuprorelin includes the following steps:
    (1) Fmoc-Pro-HMPB-AM resin is obtained from Fmoc-Pro-OH and HMPB-AM resin with a substitution degree of 0.2mmol/g～1.2mmol/g as starting materials;
    (2) The Fmoc-Pro-HMPB-AM resin was coupled one by one by Fmoc/tBu solid phase method to connect amino acids with protective groups in sequence, and the side chain fully protected leuprolide precursor peptide-HMPB-AM was synthesized Resin;
    (3) Cut the side chain fully protected leuprolide precursor peptide-HMPB-AM resin to obtain the side chain fully protected leuprolide precursor peptide;
    (4) Fully protected side chain leuprolide precursor peptide undergoes ethylamination to obtain side chain fully protected leuprolide;
    (5) Leuprolide is fully protected on the side chain by removing the side chain protecting group to obtain the crude leuprolide peptide;
    (6) The crude leuprorelin peptide is separated and purified by a high-pressure liquid phase column and lyophilized to obtain the leuprolide refined peptide.
Leuprorelin Preparation Products And Raw materials
Raw materials
Preparation Products
Leuprorelin Suppliers
Global(301)Suppliers
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    Henan Tianfu Chemical Co.,Ltd.
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