Protein Modification Reagents
eMolecules 2128735-22-6 | N-Mal-N-bis(PEG4-amine) TFA salt | Broadpharm606.714 | C27H50N4O11 | 98.000 | NCCOCCOCCOCCOCCN(CCOCCOCCOCCOCCN)C(=O)CCN1C(=O)C=CC1=O | 250mg | 354974829
N-Mal-N-bis(PEG4-amine) TFA salt | Broadpharm | 2128735-22-6606.714 | C27H50N4O11 | 98.000 | NCCOCCOCCOCCOCCN(CCOCCOCCOCCOCCN)C(=O)CCN1C(=O)C=CC1=O | 250mg | 354974829
STA Pharmaceutical Fmoc-NH-PEG5-CH2COOH | 10 g | CAS 635287-26-2 | InChIKey LNIFRTLAPAPKAG-UHFFFAOYSA-N
Fmoc-NH-PEG5-CH2COOH is a Amino Acid reagent (Subcategory: PEG AA) sold by WuXi TIDES. Offered in 10 g. Store at 4 °C. SDS available for reference.
Specifications
- CAS: 635287-26-2
- MDL: No data
- InChIKey: LNIFRTLAPAPKAG-UHFFFAOYSA-N
- Molecular Weight: 517.575
- Molecular Formula: C27H35NO9
- Purity: ≥95%
- Container Type: 60 mL HDPE
- Pack Size: 10 g
- Net Weight: 10 g
- Gross Weight: 25 g
- Commodity Code: 29242970
- Country Of Origin: China
- IUPAC: 1-(9H-fluoren-9-yl)-3-oxo-2,7,10,13,16,19-hexaoxa-4-azahenicosan-21-oic acid
- SMILES: O=C(COCCOCCOCCOCCOCCNC(OCC1C2=CC=CC=C2C3=CC=CC=C31)=O)O
Medchemexpress LLC Dbco-peg4-val-cit-pab-mmaf | 2244602-23-9 | 98.7% | 1672.01 | C88H126N12O20 | 50 MG
DBCO-PEG4-Val-Cit-PAB-MMAF is a cleavable antibody-drug conjugate (ADC) linker construct combining a DBCO click handle, a four-unit PEG spacer, a Val-Cit cleavable dipeptide, a PAB self-immolative spacer, and the cytotoxin MMAF. Supplied as a solid for conjugation workflows, it is intended for ADC synthesis and strain-promoted alkyne-azide cycloaddition (SPAAC) with azide-functionalized partners.
- Cleavable Val-Cit linker for enzymatic payload release.
- DBCO handle enables copper-free click conjugation (SPAAC).
- PEG4 spacer improves solubility and reduces aggregation.
- High purity (~98.7%) suitable for research use.
- Supplied as a solid; recommended storage -20°C under nitrogen.
- Suitable for conjugation to azide-functionalized biomolecules.
eMolecules 141282-35-1 | Medchem Express | Amino-PEG5-CH2COOH | 50mg | 673358879 | HY-130577 | MFCD27977526 | 295.332 | C12H25NO7
Ambeed | N1N2-Didodecyl-N1N1N2N2-tetramethylethane-12-diaminium bromide | 250mg | 491662680 | A367005 | 18464-23-8 | MFCD01861906 | 614.680 | C30H66Br2N2
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Medchemexpress LLC VH285-PEG4-C4-Cl (HaloPROTAC 3) | 1799506-07-2 | ≥98.0% | 799.42 | 25 MG
VH285-PEG4-C4-Cl (HaloPROTAC 3) is a conjugate of ligands for E3 and a 16-atom-length linker. The connector of the linker is a Halogen group. It incorporates the VH285 based VHL ligand and an alkyl/ether-based linker. It is a highly potent and efficacious degrader of GFP-HaloTag7 with a DC50 of 19 nM.
- Highly potent and efficacious degrader of GFP-HaloTag7 with a DC50 of 19 nM.
- Able to induce 90% degradation of GFP-Halotag at 625 nM.
- Binds to VHL with an IC50 of 0.54 μM.
- Conjugate of ligands for E3 and 16-atom-length linker.
- Connector of linker is halogen group.
- Incorporates the VH285 based VHL ligand and an alkyl/ether-based linker.
- Treatment with 500 nM can induce nearly complete knockdown of both HaloTag7-ERK1 and HaloTag7-MEK1.
Medchemexpress LLC Biotin-PEG11-SH | 1650579-23-9 | 98.0% | 788.02 | C34H65N3O13S2 | 5 MG
BIOTIN-PEG11-SH is a biotinylation reagent containing an 11-unit polyethylene glycol spacer and a terminal thiol group. It is used to introduce a biotin tag onto proteins and other thiol-reactive biomolecules; the PEG spacer improves solubility and reduces steric hindrance to enable efficient labeling in biochemical and proteomic workflows.
- Terminal thiol group for thiol-specific conjugation.
- Peg11 spacer improves solubility and reduces steric hindrance.
- High purity (98.0%).
- Soluble in DMSO at concentrations ≥100 mg/mL.
- Solid form, recommended storage at -20 °C under nitrogen.
- Intended for research use in protein biotinylation and labeling applications.
![Medchemexpress LLC Spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-6-carboxamide | 412319-45-0 | 98.1% | 576.55 g·mol⁻¹ | C29H28N4O9 | 5 MG](https://assets.fishersci.com/TFS-Assets/CCG/product-images/5000223507.png-250.jpg)
Medchemexpress LLC Spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-6-carboxamide | 412319-45-0 | 98.1% | 576.55 g·mol⁻¹ | C29H28N4O9 | 5 MG
6-FAM-PEG3-Azide is a fluorescein-based azide reagent for click-chemistry conjugation to alkyne-containing biomolecules, commonly used to label oligonucleotides. It combines a 6-carboxyfluorescein fluorophore with a PEG3 spacer and an azide group to enable efficient copper-catalyzed azide-alkyne cycloaddition.
- Provides a 6-FAM fluorophore with Ex 498 nm and Em 532 nm.
- Includes a PEG3 spacer to improve solubility and reduce steric hindrance.
- Azide functionality enables copper-catalyzed azide-alkyne cycloaddition (click chemistry).
- High purity suitable for labeling applications (≈98%).
- Soluble in DMSO at 50 mg/mL; ultrasonic agitation may be recommended.
- Powder stable at -20°C; store solutions frozen for long-term stability.
Cayman Chemical ANTIBODY DBCO-amIn 500mg
A copper-free click chemistry reagent; has been used in the synthesis of clickable fluorescent probes
Medchemexpress LLC Azide-PEG2-MS | 176520-23-3 | 97.0% | C5H11N3O4S | 50 MG
Azide-PEG2-MS | 176520-23-3 | 97.0% | C5H11N3O4S | 50 MG
Medchemexpress LLC Biotinyl-NH-PEG3-C3-amido-C3-COOH | 1202761-21-4 | 99.3% | 50 MG
Biotinyl-NH-PEG3-C3-amido-C3-COOH is a PEG-based PROTAC linker that can be used in the synthesis of PROTACs. It is for research use only and not sold to patients.
- Solid appearance
- White to off-white color
- Soluble in DMSO (250 mg/mL)
- Soluble in methanol (≥ 100 mg/mL)
- Molecular weight: 560.70
- Molecular formula: C25H44N4O8S
eMolecules 557756-85-1 | FmocNH-PEG4-CH2CH2COOH | Acrotein ChemBio Inc. | MFCD06656472 | 487.549 | C26H33NO8 | 97.000 | OC(=O)CCOCCOCCOCCOCCNC(=O)OCC1c2ccccc2-c2ccccc12 | 10g | 771325791
FmocNH-PEG4-CH2CH2COOH | Acrotein ChemBio Inc. | 557756-85-1 | MFCD06656472 | 487.549 | C26H33NO8 | 97.000 | OC(=O)CCOCCOCCOCCOCCNC(=O)OCC1c2ccccc2-c2ccccc12 | 10g | 771325791
eMolecules 557756-85-1 | FmocNH-PEG4-CH2CH2COOH | Acrotein ChemBio Inc. | MFCD06656472 | 487.549 | C26H33NO8 | 97.000 | OC(=O)CCOCCOCCOCCOCCNC(=O)OCC1c2ccccc2-c2ccccc12 | 5g | 487561654
FmocNH-PEG4-CH2CH2COOH | Acrotein ChemBio Inc. | 557756-85-1 | MFCD06656472 | 487.549 | C26H33NO8 | 97.000 | OC(=O)CCOCCOCCOCCOCCNC(=O)OCC1c2ccccc2-c2ccccc12 | 5g | 487561654
eMolecules 882847-34-9 | Fmoc-NH-PEG6-CH2CH2COOH | ChemScene | MFCD06656474 | 575.655 | C30H41NO10 | 96.000 | OC(=O)CCOCCOCCOCCOCCOCCOCCNC(=O)OCC1c2ccccc2-c2ccccc12 | 5g | 572245293
Fmoc-NH-PEG6-CH2CH2COOH | ChemScene | 882847-34-9 | MFCD06656474 | 575.655 | C30H41NO10 | 96.000 | OC(=O)CCOCCOCCOCCOCCOCCOCCNC(=O)OCC1c2ccccc2-c2ccccc12 | 5g | 572245293
eMolecules 882847-34-9 | FMOC-NH-PEG6-CH2CH2COOH | AstaTech | MFCD06656474 | 575.655 | C30H41NO10 | 95.000 | OC(=O)CCOCCOCCOCCOCCOCCOCCNC(=O)OCC1c2ccccc2-c2ccccc12 | 5g | 449766659
FMOC-NH-PEG6-CH2CH2COOH | AstaTech | 882847-34-9 | MFCD06656474 | 575.655 | C30H41NO10 | 95.000 | OC(=O)CCOCCOCCOCCOCCOCCOCCNC(=O)OCC1c2ccccc2-c2ccccc12 | 5g | 449766659