Crosslinking Reagents
Crosslinking Reagents
Thermo Scientific™ Sulfo-SBED Biotin Label Transfer Kit - Western Blot Application
Tag a purified protein to covalently crosslink and transfer biotinylation to its binding partner; then detect the results by Western blotting.
Thermo Scientific™ BMB (1,4-bismaleimidobutane)
Crosslink sulfhydryls to sulfhydryls (cysteine residues in proteins or peptides) with this mid-length crosslinker composed of maleimide groups and 9-atom (10.9A) spacer arm.
Thermo Scientific™ AMAS (N-α-maleimidoacet-oxysuccinimide ester)
Crosslink amines to sulfhydryls with this very short crosslinker composed of NHS-ester and maleimide groups at ends of an aliphatic, 4-atom (4.4A) spacer arm.
Thermo Scientific™ SPDP (succinimidyl 3-(2-pyridyldithio)propionate)
Crosslink amines to sulfhydryls with this crosslinker composed of NHS-ester and pyridyldithiol groups on 3-atom spacer arm; forms cleavable disulfide bonds with cysteines.
Thermo Scientific™ SMPB (succinimidyl 4-(p-maleimidophenyl)butyrate)
Crosslink amines to sulfhydryls with this mid-length crosslinker composed of NHS-ester and maleimide groups at ends of an aromatic, 10-atom (11.6A) spacer arm.
Thermo Scientific™ DST (disuccinimidyl tartrate)
Crosslink amines to amines with disuccinimidyl tartrate, composed of NHS-ester groups and a diol-containing spacer arm (6.4A) that is periodate-cleavable.
Thermo Scientific™ DTME (dithiobismaleimidoethane)
Crosslink sulfhydryls to sulfhydryls (cysteine residues) with this long, cleavable crosslinker composed of maleimide groups and 11-atom (13.3A) disulfide spacer arm.
Thermo Scientific™ BMOE (bismaleimidoethane)
Crosslink sulfhydryls to sulfhydryls (cysteine residues in proteins or peptides) with this short crosslinker composed of maleimide groups and a 7-atom (8.0A) spacer arm.
Thermo Scientific™ Sulfo-NHS (N-hydroxysulfosuccinimide)
Prepare amine-reactive sulfo-NHS-ester crosslinkers or enhance carbodiimide (EDC) conjugation for peptides or proteins using N-hydroxysulfosuccinimide, CAS 106627-54-7.

Thermo Scientific™ BMPS (N-β-maleimidopropyl-oxysuccinimide ester)
Crosslink amines to sulfhydryls with this very short amine-to-sulfhydryl crosslinker composed of NHS-ester and maleimide groups at ends of an aliphatic, 5-atom spacer arm.
Thermo Scientific™ SMPH (Succinimidyl 6-((beta-maleimidopropionamido)hexanoate))
Crosslink amines to sulfhydryls with this long crosslinker composed of NHS-ester and maleimide groups at ends of an aliphatic, 12-atom (14.2A) spacer arm.
Thermo Scientific™ SIA (succinimidyl iodoacetate)
Crosslink amines to sulfhydryls with this very short crosslinker composed of NHS-ester and iodoacetyl (haloacetyl) groups at ends of a 3-atom (1.5A) spacer arm.
Thermo Scientific™ LC-SMCC (succinimidyl 4-(N-maleimidomethyl)cyclohexane-1-carboxy-(6-amidocaproate))
Crosslink amines to sulfhydryls with this long crosslinker composed of NHS-ester and maleimide groups at ends of a stabilizing cyclohexane-containing, 15-atom spacer arm.
Thermo Scientific™ PEG12-SPDP (PEGylated, long-chain SPDP crosslinker)
Very long (54.1A) amine-to-sulfhydryl crosslinker; NHS-ester and pyridyldithiol groups at ends of 12-unit polyethylene glycol spacer arm; forms cleavable disulfide bonds; water-soluble.
Thermo Scientific™ Pierce™ EDC, No-Weigh™ Format
Immobilize or conjugate proteins using 1-Ethyl-3-(3-dimethylaminopropyl) carbodiimide (CAS 25952-53-8), a water-soluble, carboxyl-to-amine crosslinker.
Thermo Scientific™ BS3 (bis(sulfosuccinimidyl)suberate), No-Weigh™ Format
Thermo Scientific™ Pierce™ BS3 (bis(sulfosuccinimidyl)suberate) No-Weigh™ Format is an amine-to-amine crosslinker that is homobifunctional, water-soluble, non-cleavable and membrane impermeable.

Thermo Scientific™ DSS (disuccinimidyl suberate), No-Weigh™ Format
Crosslink amines to amines with disuccinimidyl suberate composed of NHS-ester groups with a membrane-permeable, mid-length spacer for intracellular protein crosslinking.
Thermo Scientific™ BM(PEG)2 (1,8-bismaleimido-diethyleneglycol)
Crosslink sulfhydryls to sulfhydryls (cysteine residues) with this long, pegylated, water-soluble crosslinker composed of maleimide groups and 2-unit (14.7A) PEG spacer arm.
Thermo Scientific™ Pierce™ Premium Grade SPDP
Crosslink proteins and other biomolecules in applications where product integrity and risk minimization are paramount with Thermo Scientific™ Pierce™ Premium Grade SPDP, a high-quality formulation of this popular pyridyldithiol-based amine-to-sulfhydryl crosslinker.
Thermo Scientific™ Pierce™ Premium Grade BS3
Crosslink proteins and other biomolecules in applications where product integrity and risk minimization are paramount with Thermo Scientific™ Pierce™ Premium Grade BS3, a high-quality formulation of this popular amine-reactive crosslinker.
Thermo Scientific™ SPB (succinimidyl-[4-(psoralen-8-yloxy)]-butyrate)
Crosslink amines to DNA with this crosslinker composed of NHS-ester and psoralen reactive groups; conjugates to DNA via light-activated intercalation next to pyrimidine bases.
Thermo Scientific™ BS(PEG)9 (PEGylated bis(sulfosuccinimidyl)suberate)
Crosslink amines to amines with these long (21.7A and 35.8A) crosslinkers composed of NHS-ester groups and 5-unit or 9-unit PEG spacer arms that enhance protein solubility.
Invitrogen™ Succinimidyl 3-(2-Pyridyldithio)Propionate (SPDP)
The succinimidyl ester chemically reacts with primary amines and after mild reduction of the dithiol, it can react form a disulfide with other thiols.
Thermo Scientific™ SM(PEG)12 (PEGylated, long-chain SMCC crosslinker)
Crosslink amines to sulfhydryls with these crosslinkers containing NHS-ester and maleimide groups at ends of water-soluble polyethylene glycol spacer arms (17.6 to 95.2A).
Thermo Scientific™ Sulfo-EGS (ethylene glycol bis(sulfosuccinimidyl succinate))
Crosslink amines to amines with a crosslinker composed of sulfo-NHS-ester groups and hydroxylamine-cleavable spacer arm; water-soluble for cell-surface protein crosslinking.
Thermo Scientific™ LC-SDA (NHS-LC-Diazirine) (succinimidyl 6-(4,4'-azipentanamido)hexanoate)
Very short to mid-length (3.9 to 13.5A), amine-to-anything crosslinkers; NHS-ester and diazirine reactive groups; photoactivate with UV light (Amax 330 to 370nm).
Thermo Scientific™ EMCH (N-ε-maleimidocaproic acid hydrazide)
Crosslink sulfhydryls to periodate-treated glycoprotein sugars with this mid-length (11.8A) crosslinker containing maleimide and hydrazide groups.
Thermo Scientific™ GMBS (N-γ-maleimidobutyryl-oxysuccinimide ester)
Crosslink amines to sulfhydryls with this short crosslinker composed of NHS-ester and maleimide groups at ends of an aliphatic, 6-atom (7.3A) spacer arm.
Thermo Scientific™ SM(PEG)2 (PEGylated SMCC crosslinker)
Crosslink amines to sulfhydryls with these crosslinkers containing NHS-ester and maleimide groups at ends of water-soluble polyethylene glycol spacer arms (17.6 to 95.2A).
Thermo Scientific™ Sulfo-MBS (m-maleimidobenzoyl-N-hydroxysulfosuccinimide ester)
Crosslink amines to sulfhydryls with this short, water-soluble crosslinker composed of sulfo-NHS-ester and maleimide groups at ends of an aromatic, 6-atom (7.3A) spacer arm.