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Pyrrolidines

Organic heterocyclic compounds that consist of a five-membered ring with four carbon atoms and one nitrogen atom that form a cyclic secondary amine.

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1

Echelon Biosciences Research Labs Endothelin Receptor Antagonist BQ 3020; Acetyl-[Ala11,15]-ET 1 (6-21) - 0.5 mg, CAS#: 143113-45-5

Endothelin Receptor Antagonist BQ 3020; Acetyl-[Ala11,15]-ET 1 (6-21) - 0.5mg , Ac-Leu-Met-Asp-Lys-Glu-Ala-Val-Tyr-Phe-Ala-His-Leu-Asp-Ile-Ile-Trp-OH This item is non returnable

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2

Medchemexpress LLC Milademetan tosylate hydrate | 2095625-97-9 | 98.9% | 808.74 g/mol | C37H44Cl2FN5O8S | 10 MG
SDP

Milademetan tosylate hydrate is the tosylate salt form of milademetan, an orally active small-molecule inhibitor of the MDM2-p53 interaction used in preclinical oncology research. Supplied as a research-use reagent, it is characterized by CAS 2095625-97-9, a molecular weight of 808.74 g/mol, and supporting documentation for laboratory use.

  • Salt form (tosylate hydrate) for improved handling and stability.
  • Orally active MDM2 inhibitor that facilitates p53 pathway reactivation.
  • High purity suitable for analytical and preclinical studies (98.9%).
  • Available in small pack sizes suitable for lab-scale experiments.
  • Includes datasheet, certificate of analysis, and safety information for lab use.

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3

Medchemexpress LLC Azido-methyltetrazine di-arm linker | 2861998-16-3 | 98.8% | 440.50 g/mol | C20H28N10O2 | 5 MG
SDP

Azido-methyltetrazine di-arm linker is a multivalent linker used for the synthesis of antibody-drug conjugates (ADCs). It contains azide and methyltetrazine reactive groups to enable site-specific bioconjugation and click chemistry, and is supplied as a high-purity research reagent.

  • Multivalent di-arm linker suitable for ADC construction.
  • Contains azide and methyltetrazine functional groups for click chemistry.
  • Molecular weight approximately 440.50 g/mol and formula C20H28N10O2.
  • High purity suitable for research applications.
  • Available in small research quantities for lab-scale conjugation experiments.

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4

Medchemexpress LLC (1S,2S)-ML-SI3 ((+)-trans-ML-SI3) | 2563870-87-9 | 100.0% | 429.58 g/mol | C23H31N3O3S | 5 MG
SDP

(1S,2S)-ML-SI3 ((+)-trans-ML-SI3) is a stereoisomeric small-molecule modulator of TRPML ion channels used in biochemical and cellular research. It activates TRPML2 and TRPML3 while inhibiting TRPML1, enabling investigation of lysosomal ion channel function and neuronal signaling. Supplied as a high-purity research reagent in small laboratory pack sizes.

  • High purity suitable for biochemical and cellular assays.
  • Selective modulation of TRPML2 and TRPML3, with inhibitory activity at TRPML1.
  • Stereochemically defined isomer for reproducible results.
  • Good solubility in DMSO for in vitro preparation.
  • Available in small lab-scale quantities for research use.

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5

Medchemexpress LLC N-(2-hydroxyethyl)maleimide | 1585-90-6 | MFCD00465266 | 99.2% | 141.12 g/mol | C6H7NO3 | 5 G
SDP

N-(2-hydroxyethyl)maleimide is a maleimide-based cross-linker bearing a 2-hydroxyethyl substituent. It provides a thiol-reactive maleimide and a hydroxyl handle for downstream modification, commonly used in chemical synthesis and bioconjugation research.

  • Reactive maleimide moiety for thiol-selective conjugation.
  • Hydroxyl functional group enables further derivatization.
  • Low molecular weight (141.12 g/mol) for minimal steric hindrance.
  • High purity suitable for research applications (≈99.2%).
  • Available in small lab-scale pack sizes for synthetic workflows.

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6

Medchemexpress LLC N-[4-[(3-chloro-4-fluorophenyl)amino]-7-[[(3S)-tetrahydro-3-furanyl]oxy]-6-quinazolin]-4-(dimethylam | 439081-18-2 | MFCD12407405 | 100.0% | 485.94 | C24H25ClFN5O3 | 250 MG
SDP

(E/Z)-Afatinib is a research-grade irreversible epidermal growth factor receptor (EGFR) inhibitor provided as a solid for laboratory use. It is used in cellular and biochemical studies to probe EGFR, HER2, and HER4 signaling pathways and is intended for research applications only.

  • Irreversible inhibitor of EGFR, HER2, and HER4.
  • High purity (reported 99.98%).
  • Molecular weight 485.94 and formula C24H25ClFN5O3.
  • White to off-white solid physical form.
  • Suitable for cellular and biochemical assays.
  • Available in a 250 MG package for lab-scale use.

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7

Medchemexpress LLC Z-levd-fmk | 1135688-25-3 | MFCD08703607 | 98.0% | 652.71 g/mol | C31H45FN4O10 | 5 MG
SDP

Z-LEVD-FMK is a cell-permeable, irreversible caspase-4 inhibitor used for apoptosis and endoplasmic reticulum (ER) stress research. It has been reported to block ER stress-induced apoptosis in cancer cell models and is supplied as a high-purity solid intended for laboratory studies.

  • Cell-permeable inhibitor suitable for intracellular assays.
  • Blocks ER stress-induced apoptosis in cell models.
  • High purity for reproducible biochemical and cellular experiments.
  • Supplied as a stable solid with defined storage recommendations.
  • Available in small research-scale pack sizes for lab use.

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8

Medchemexpress LLC 3-azido-7-hydroxycoumarin | 817638-68-9 | MFCD12924840 | 98.0% | 203.15 | C9H5N3O3 | 10 MG
SDP

3-Azido-7-hydroxycoumarin is a coumarin-based fluorogenic reagent containing an azide functional group used for bioorthogonal labeling via copper-catalyzed azide-alkyne cycloaddition (CuAAC). It is intended for research use in fluorescence-based assays and imaging, supplied as a solid and provided in multiple pack sizes for laboratory applications.

  • Fluorogenic coumarin scaffold for sensitive detection.
  • Reactive azide group for CuAAC bioorthogonal labeling.
  • Suitable for fluorescence assays and cellular imaging.
  • Stable as a powder with recommended storage at -20°C.
  • Available in small lab-scale quantities for research use.

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9

Medchemexpress LLC (Tert-butoxycarbonyl)-l-valyl-l-valine | 69209-73-0 | MFCD00237584 | 97.0% | 316.39 | C15H28N2O5 | 25 G
SDP

(tert-Butoxycarbonyl)-L-valyl-L-valine is a Boc-protected dipeptide used as an amino acid derivative building block for peptide synthesis and related biochemical research. It is supplied as a white to off-white solid suitable for laboratory synthesis applications.

  • Used as a Boc-protected dipeptide building block in peptide synthesis.
  • CAS number 69209-73-0 for unambiguous identification.
  • Molecular weight 316.39 and formula C15H28N2O5.
  • Purity 97.0% suitable for research use.
  • Available in multiple sizes, including 25 G for typical lab use.
  • Appearance: solid, white to off-white.

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10

Medchemexpress LLC (Z)-non-6-en-1-ol | 35854-86-5 | MFCD00015388 | 142.24 g·mol⁻¹ | C9H18O | 5 G
SDP

(Z)-Non-6-en-1-ol is the (Z)-isomer of non-6-en-1-ol, a medium-chain primary fatty alcohol supplied as a biochemical reagent for life-science research. It is used in laboratory assays, analytical workflows, and as a synthetic intermediate or reference material for organic chemistry applications.

  • Biochemical reagent for life-science research
  • Medium-chain primary fatty alcohol, (Z)-isomer
  • Chemical formula C9H18O; molecular weight 142.24 g·mol⁻¹
  • Available in small lab pack sizes suitable for analytical and synthetic use
  • Appropriate as a reference standard or synthetic intermediate in organic synthesis

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11

Medchemexpress LLC Boc-Met-Leu-Phe-OH | 67247-12-5 | MFCD00037435 | 99.9% | 509.66 | C25H39N3O6S | 25 MG
SDP

Boc-Met-Leu-Phe-OH is a formyl peptide receptor (FPR) antagonist that reduces superoxide production induced by fMLF, with an IC50 of 0.63 μM. It is supplied as a high-purity peptide for research use in studies of FPR signaling and neutrophil activation.

  • Reduces fMLF-induced superoxide production (IC50 = 0.63 μM)
  • High purity (99.9%)
  • Molecular weight 509.66 g/mol
  • Molecular formula C25H39N3O6S
  • Available in small mg quantities for lab-scale studies

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12

Medchemexpress LLC N-(hydroxymethyl)acetamide | 625-51-4 | MFCD00014417 | 96.5% | 89.09 g/mol | C3H7NO2 | 5 G
SDP

N-(Hydroxymethyl)acetamide is a low-molecular-weight biochemical reagent used as a model molecule in studies of hydrogen bonding and molecular interactions. It is supplied as a characterized solid with available analytical documentation for laboratory and materials research applications.

  • Small, well-characterized molecule suitable for hydrogen-bonding studies.
  • Molecular formula C3H7NO2; molecular weight 89.09 g/mol.
  • Purity 96.46% as reported on the certificate of analysis.
  • Available in multiple pack sizes, including 5 g, for flexible lab use.

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13

Medchemexpress LLC N-Boc-PEG4-bromide | 1076199-21-7 | MFCD09840081 | 98.0% | 356.25 g/mol | C13H26BrNO5 | 100 MG
SDP

N-Boc-PEG4-bromide is a Boc-protected PEG4 linker bearing a terminal bromide. It is supplied for research use as a cleavable linker building block for antibody-drug conjugate (ADC) synthesis and as a PEG-based spacer in proteolysis-targeting chimera (PROTAC) assembly; the terminal bromide enables alkylation chemistry while the PEG spacer improves solubility and flexibility.

  • Boc-protected amino group for protecting amines during synthesis.
  • Terminal bromide enables nucleophilic substitution and alkylation.
  • Peg4 spacer increases aqueous solubility and provides flexibility.
  • High purity for research applications.
  • Available in small pack sizes suitable for lab-scale synthesis.

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14

Medchemexpress LLC Tert-butoxycarbonyl-L-valyl-L-alanine | 70396-18-8 | MFCD22381612 | 98.0% | 288.34 | C13H24N2O5 | 1 G
SDP

(tert-Butoxycarbonyl)-L-valyl-L-alanine is a Boc-protected dipeptide used as a research reagent and building block in peptide synthesis. Supplied with manufacturer characterization, it is intended for laboratory method development, peptide coupling reactions, and other small-scale synthetic workflows.

  • Boc-protected dipeptide suitable for peptide synthesis and method development.
  • High purity (98.0%) with manufacturer certificate of analysis.
  • Molecular formula C13H24N2O5 and molecular weight 288.34 g/mol.
  • Available in small lab quantities for bench-scale synthesis.
  • Supplied as a solid, convenient for storage and handling.

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15

Medchemexpress LLC Cis-aconitic acid | 585-84-2 | MFCD00063184 | 99.3% | 174.11 g/mol | C6H6O6 | 10 MG
SDP

(Z)-Aconitic acid (cis-aconitic acid) is the Z-isomer of aconitic acid provided as a research-grade analytical standard for biochemical and analytical applications. It serves as a reagent and reference compound in enzymology, metabolic profiling, and chromatographic method development. The compound has CAS 585-84-2, formula C6H6O6, and molecular weight 174.11 g/mol.

  • High purity suitable for analytical use.
  • Verified by RP-HPLC for assay confirmation.
  • Appropriate as an enzymology and metabolomics standard.
  • Small pack sizes for lab-scale experiments.
  • Crystalline material with defined molecular weight for accurate calculations.

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