1. Home
  2. Products
  3. Therapeutic Peptides
  4. APIs
  5. Lecirelin

Lecirelin

Lecirelin (6-(3-methyl-d-valine)-9-(N-ethyl-L-prolynamide)-10-deglycinamide) luteinizing hormone releasing factor, is a synthetic hypothalamic gonadotropin releasing hormone (GnRH) analogue. Lecirelin is a nonapeptide, while the natural compound is a decapeptide. Moreover, the glycine aminoacid in the 6th position has been substituted by leucine.

Designed for biological research and industrial applications, not intended for individual clinical or medical purposes.
Lecirelin(CAS 61012-19-9)

CAT No: 10-101-89

CAS No:61012-19-9

Synonyms/Alias:LECIRELIN;61012-19-9;Dalmarelin;Gestran;ZD8NZ8J5LN;Lecrelin;UNII-ZD8NZ8J5LN;DTXSID00735365;GLXC-25476;DA-69143;MS-32049;F85421;(Des-Gly10,tBu-D-Gly6,Pro-NHEt9)-LHRH trifluoroacetate salt;

Chemical Name:(2S)-N-[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2S)-1-[[(2R)-1-[[(2S)-1-[[(2S)-5-(diaminomethylideneamino)-1-[(2S)-2-(ethylcarbamoyl)pyrrolidin-1-yl]-1-oxopentan-2-yl]amino]-4-methyl-1-oxopentan-2-yl]amino]-3,3-dimethyl-1-oxobutan-2-yl]amino]-3-(4-hydroxyphenyl)-1-oxopropan-2-yl]amino]-3-hydroxy-1-oxopropan-2-yl]amino]-3-(1H-indol-3-yl)-1-oxopropan-2-yl]amino]-3-(1H-imidazol-5-yl)-1-oxopropan-2-yl]-5-oxopyrrolidine-2-carboxamide

Custom Peptide Synthesis
cGMP Peptide
  • Registration of APIs
  • CMC information required for an IND
  • IND and NDA support
  • Drug master files (DMF) filing
M.F/Formula
C59H84N16O12
M.W/Mr.
1209.4
Sequence
One Letter Code:XHWSYXLRP
Three Letter Code:H-Pyr-His-Trp-Ser-Tyr-D-Gly(tBu)-Leu-Arg-Pro-NHEt
Activity
Agonist
Biological Activity
Lecirelin, a synthetic gonadotropin-releasing hormone (GnRH) analogue, acts as a GnRH agonist. Lecirelin is widely used for the research of bovine ovarian follicular cysts.
Target
GnRH Receptor
Shipping Condition
Room temperature in continental US; may vary elsewhere.
InChI
InChI=1S/C59H84N16O12/c1-7-63-55(85)46-15-11-23-75(46)57(87)40(14-10-22-64-58(60)61)68-50(80)41(24-32(2)3)72-56(86)48(59(4,5)6)74-53(83)42(25-33-16-18-36(77)19-17-33)69-54(84)45(30-76)73-51(81)43(26-34-28-65-38-13-9-8-12-37(34)38)70-52(82)44(27-35-29-62-31-66-35)71-49(79)39-20-21-47(78)67-39/h8-9,12-13,16-19,28-29,31-32,39-46,48,65,76-77H,7,10-11,14-15,20-27,30H2,1-6H3,(H,62,66)(H,63,85)(H,67,78)(H,68,80)(H,69,84)(H,70,82)(H,71,79)(H,72,86)(H,73,81)(H,74,83)(H4,60,61,64)/t39-,40-,41-,42-,43-,44-,45-,46-,48-/m0/s1
InChI Key
XJWIEWPGHRSZJM-MGZASHDBSA-N
Canonical SMILES
CCNC(=O)C1CCCN1C(=O)C(CCCN=C(N)N)NC(=O)C(CC(C)C)NC(=O)C(C(C)(C)C)NC(=O)C(CC2=CC=C(C=C2)O)NC(=O)C(CO)NC(=O)C(CC3=CNC4=CC=CC=C43)NC(=O)C(CC5=CN=CN5)NC(=O)C6CCC(=O)N6
Isomeric SMILES
CCNC(=O)[C@@H]1CCCN1C(=O)[C@H](CCCN=C(N)N)NC(=O)[C@H](CC(C)C)NC(=O)[C@@H](C(C)(C)C)NC(=O)[C@H](CC2=CC=C(C=C2)O)NC(=O)[C@H](CO)NC(=O)[C@H](CC3=CNC4=CC=CC=C43)NC(=O)[C@H](CC5=CN=CN5)NC(=O)[C@@H]6CCC(=O)N6

Useful Tools

Peptide Calculator

Abbreviation List

Peptide Glossary

If you have any peptide synthesis requirement in mind, please do not hesitate to contact us at . We will endeavor to provide highly satisfying products and services.

Featured Services
Custom Conjugation ServicePeptide CDMOPeptide Synthesis ServicesPeptide Nucleic Acids SynthesisEpitope Mapping ServicescGMP Peptide ServicePeptide Modification ServicesPeptide Analysis Services
Hot Products
Deslorelin Acetate

Deslorelin Acetate is a potent GnRH analog peptide for fertility control research. Order Deslorelin peptide from a professional peptide supplier for veterinary applications.

Read More Read More
Alarelin acetate

Alarelin Acetate is a high-purity synthetic peptide used in fertility and ovulation research. Buy Alarelin peptide online from a trusted peptide supplier for advanced hormonal studies.

Read More Read More
Gonadorelin Acetate

Gonadorelin Acetate stimulates LH and FSH release in fertility research. Purchase Gonadorelin peptide powder from a verified peptide supplier for reproductive studies.

Read More Read More
Glucagon

Glucagon peptide promotes glycogen breakdown and blood sugar regulation. Buy Glucagon research peptide online for metabolic and liver studies.

Read More Read More
Argipressin

Argipressin peptide regulates water balance and blood pressure in biological systems. Shop pure Argipressin peptide online for cardiovascular and kidney research.

Read More Read More
Fertirelin Acetate

Fertirelin Acetate is a synthetic peptide that promotes ovulation and fertility. Purchase Fertirelin research peptide for breeding and hormonal studies.

Read More Read More
Thymopentin Acetate

Thymopentin Acetate peptide enhances immune modulation and T-cell function. Purchase Thymopentin research peptide online for immunotherapy and cell biology research.

Read More Read More
Atosiban

Atosiban is a peptide oxytocin receptor antagonist that helps prevent preterm labor. Buy Atosiban peptide for reproductive and uterine contractility research.

Read More Read More
Carperitide

Carperitide is a human atrial natriuretic peptide analog for heart and kidney research. Buy Carperitide peptide online to study diuretic and cardiovascular effects.

Read More Read More
Carbetocin

Carbetocin is a synthetic oxytocin analog that promotes uterine contraction and postpartum recovery. Buy Carbetocin peptide powder from a professional supplier for reproductive research.

Read More Read More
About us

Creative Peptides is a trusted CDMO partner specializing in high-quality peptide synthesis, conjugation, and manufacturing under strict cGMP compliance. With advanced technology platforms and a team of experienced scientists, we deliver tailored peptide solutions to support drug discovery, clinical development, and cosmetic innovation worldwide.

From custom peptide synthesis to complex peptide-drug conjugates, we provide flexible, end-to-end services designed to accelerate timelines and ensure regulatory excellence. Our commitment to quality, reliability, and innovation has made us a preferred partner across the pharmaceutical, biotechnology, and personal care industries.

Our Customers