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Cetrorelix is a gonadotropin-releasing hormone (GnRH) antagonist used in fertility treatments to prevent premature ovulation in women undergoing in vitro fertilization (IVF). It works by inhibiting the release of luteinizing hormone (LH), preventing premature ovulation. Cetrorelix is typically used in controlled ovarian stimulation protocols. Side effects may include headaches, abdominal pain, and injection site reactions.
Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Cetrorelix and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Cetrorelix impurities, metabolites, nitrosamine derivatives (N-NO compounds), and stable isotope-labeled products. These reference standards play a critical role in pharmaceutical R&D, supporting activities such as product formulation, ANDA and DMF submissions, quality assurance, analytical method development, and stability assessments.
All Cetrorelix-related substances undergo comprehensive characterization and are delivered with complete Certificates of Analysis and supporting analytical documentation to ensure regulatory adherence. Upon request, we can offer EP/USP traceable standards. Our products are routinely re-evaluated to maintain consistent quality and performance.

Cetrorelix Acetate
CAT No: CL-CTRO-01 CAS No: 1631741-31-5 Mol Wt: 1431.1 : 60.1 Mol F: C70H92ClN17O14 : C2H4O2 Inv Status: Custom Synthesis
Chemical Name: (S)-1-(((R)-2-((S)-2-((S)-2-((R)-2-((R)-2-((R)-2-acetamido-3-(naphthalen-2-yl)propanamido)-3-(4-chlorophenyl)propanamido)-3-(pyridin-3-yl)propanamido)-3-hydroxypropanamido)-3-(4-hydroxyphenyl)propanamido)-5-ureidopentanoyl)-L-leucyl-L-arginyl)-N-((R)-1-amino-1-oxopropan-2-yl)pyrrolidine-2-carboxamide acetate
Des-Acetyl Cetrorelix
CAT No: CL-CTRO-02 CAS No: NA Mol Wt: 1389.0 : 114.0 Mol F: C68H90ClN17O13 : C2HF3O2 Inv Status: Custom Synthesis
Chemical Name: (S)-N-((R)-1-Amino-1-oxopropan-2-yl)-1-(((R)-2-((S)-2-((S)-2-((R)-2-((R)-2-((R)-2-amino-3-(naphthalen-2-yl)propanamido)-3-(4-chlorophenyl)propanamido)-3-(pyridin-3-yl)propanamido)-3-hydroxypropanamido)-3-(4-hydroxyphenyl)propanamido)-5-ureidopentanoyl)-L-leucyl-L-arginyl)pyrrolidine-2-carboxamide 2,2,2-trifluoroacetate
Cetrorelix Acid
CAT No: CL-CTRO-03 CAS No: NA Mol Wt: 1432.0 : 114.0 Mol F: C70H91ClN16O15 : C2HF3O2 Inv Status: Custom Synthesis
Chemical Name: ((R)-2-((S)-2-((S)-2-((R)-2-((R)-2-((R)-2-acetamido-3-(naphthalen-2-yl)propanamido)-3-(4-chlorophenyl)propanamido)-3-(pyridin-3-yl)propanamido)-3-hydroxypropanamido)-3-(4-hydroxyphenyl)propanamido)-5-ureidopentanoyl)-L-leucyl-L-arginyl-L-prolyl-D-alanine compound with 2,2,2-trifluoroacetic acid
Acetyl-Ser4-Cetrorelix
CAT No: CL-CTRO-04 CAS No: NA Mol Wt: 1473.1 : 114.0 Mol F: C72H94ClN17O15 : C2HF3O2 Inv Status: Custom Synthesis
Chemical Name: (6S,9S,12R,15S,18S)-18-((R)-2-((R)-2-((R)-2-acetamido-3-(naphthalen-2-yl)propanamido)-3-(4-chlorophenyl)propanamido)-3-(pyridin-3-yl)propanamido)-1-amino-6-((S)-2-(((R)-1-amino-1-oxopropan-2-yl)carbamoyl)pyrrolidine-1-carbonyl)-15-(4-hydroxybenzyl)-1-imino-9-isobutyl-8,11,14,17-tetraoxo-12-(3-ureidopropyl)-2,7,10,13,16-pentaazanonadecan-19-yl acetate 2,2,2-trifluoroacetate
Endo-Cit-Cetrorelix
CAT No: CL-CTRO-05 CAS No: NA Mol Wt: 1588.2 : 114.0 Mol F: C76H103ClN20O16 : C2HF3O2 Inv Status: Custom Synthesis
Chemical Name: (S)-1-(((R)-2-((R)-2-((S)-2-((S)-2-((R)-2-((R)-2-((R)-2-acetamido-3-(naphthalen-2-yl)propanamido)-3-(4-chlorophenyl)propanamido)-3-(pyridin-3-yl)propanamido)-3-hydroxypropanamido)-3-(4-hydroxyphenyl)propanamido)-5-ureidopentanamido)-5-ureidopentanoyl)-L-leucyl-L-arginyl)-N-((S)-1-amino-1-oxopropan-2-yl)pyrrolidine-2-carboxamide 2,2,2-trifluoroacetate
Cetrorelix 1-4 Peptide
CAT No: CL-CTRO-06 CAS No: 208599-57-9 Mol Wt: 674.2 : 114.0 Mol F: C35H36ClN5O7 : C2HF3O2 Inv Status: Custom Synthesis
Chemical Name: ((R)-2-((R)-2-((R)-2-acetamido-3-(naphthalen-2-yl)propanamido)-3-(4-chlorophenyl)propanamido)-3-(pyridin-3-yl)propanoyl)-L-serine compound with 2,2,2-trifluoroacetic acid
L-Cit-Cetrorelix
CAT No: CL-CTRO-07 CAS No: 335158-68-4 Mol Wt: 1431.1 : 114.0 Mol F: C70H92ClN17O14 : C2HF3O2 Inv Status: Custom Synthesis
Chemical Name: (S)-1-(((S)-2-((S)-2-((S)-2-((R)-2-((R)-2-((R)-2-acetamido-3-(naphthalen-2-yl)propanamido)-3-(4-chlorophenyl)propanamido)-3-(pyridin-3-yl)propanamido)-3-hydroxypropanamido)-3-(4-hydroxyphenyl)propanamido)-5-ureidopentanoyl)-L-leucyl-L-arginyl)-N-((R)-1-amino-1-oxopropan-2-yl)pyrrolidine-2-carboxamide 2,2,2-trifluoroacetate
L-Pal Cetrorelix
CAT No: CL-CTRO-08 CAS No: NA Mol Wt: 1431.1 : 114.0 Mol F: C70H92ClN17O14 : C2HF3O2 Inv Status: Custom Synthesis
Chemical Name: (S)-1-(((R)-2-((S)-2-((S)-2-((S)-2-((R)-2-((R)-2-acetamido-3-(naphthalen-2-yl)propanamido)-3-(4-chlorophenyl)propanamido)-3-(pyridin-3-yl)propanamido)-3-hydroxypropanamido)-3-(4-hydroxyphenyl)propanamido)-5-ureidopentanoyl)-L-leucyl-L-arginyl)-N-((R)-1-amino-1-oxopropan-2-yl)pyrrolidine-2-carboxamide 2,2,2-trifluoroacetate
pCl-L-Phe Cetrorelix
CAT No: CL-CTRO-09 CAS No: NA Mol Wt: 1431.1 : 114.0 Mol F: C70H92ClN17O14 : C2HF3O2 Inv Status: Custom Synthesis
Chemical Name: (S)-1-(((R)-2-((S)-2-((S)-2-((R)-2-((S)-2-((R)-2-acetamido-3-(naphthalen-2-yl)propanamido)-3-(4-chlorophenyl)propanamido)-3-(pyridin-3-yl)propanamido)-3-hydroxypropanamido)-3-(4-hydroxyphenyl)propanamido)-5-ureidopentanoyl)-L-leucyl-L-arginyl)-N-((R)-1-amino-1-oxopropan-2-yl)pyrrolidine-2-carboxamide 2,2,2-trifluoroacetate
Cetrorelix
CAT No: CL-CTRO-10 CAS No: 120287-85-6 Mol Wt: 1431.1 Mol F: C70H92ClN17O14 Inv Status: Custom Synthesis
Chemical Name: (S)-1-(((R)-2-((S)-2-((S)-2-((R)-2-((R)-2-((R)-2-acetamido-3-(naphthalen-2-yl)propanamido)-3-(4-chlorophenyl)propanamido)-3-(pyridin-3-yl)propanamido)-3-hydroxypropanamido)-3-(4-hydroxyphenyl)propanamido)-5-ureidopentanoyl)-L-leucyl-L-arginyl)-N-((R)-1-amino-1-oxopropan-2-yl)pyrrolidine-2-carboxamide
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