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Crosslinking Reagents

Reagents containing reactive end groups that respond to the presence of specific functional groups by forming bonds between polymer chains. Ideal for various applications including conjugation reactions, biomolecule labeling, and molecular purification.
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1

Thermo Scientific™ BM(PEG)3 (1,11-bismaleimido-triethyleneglycol)

Crosslink sulfhydryls to sulfhydryls (cysteine residues) with this long, pegylated, water-soluble crosslinker composed of maleimide groups and 3-unit (17.8A) PEG spacer arm.

2

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.

3

Thermo Scientific™ NHS-Phosphine

Derivatize proteins or amine surfaces for selective conjugation, detection or purification of azide-tagged targets with these activated phosphine compounds.

4

Thermo Scientific™ Sulfo-SIAB (sulfosuccinimidyl (4-iodoacetyl)aminobenzoate)

Crosslink amines to sulfhydryls with this mid-length, water-soluble crosslinker composed of sulfo-NHS-ester and iodoacetyl (haloacetyl) groups at ends of a 9-atom spacer arm.

5

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.

6

Thermo Scientific™ NHS (N-hydroxysuccinimide)

Prepare amine-reactive NHS-ester crosslinkers or enhance carbodiimide (EDC) conjugation for peptides or proteins using N-hydroxysuccinimide, CAS 6066-82-6.

7

Thermo Scientific™ NHS-Azide

Activated azido compounds to derivatize proteins or amine surfaces for selective conjugation, detection or purification by phosphine-modified probes.

8

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).

Shipping Condition Ambient
Content And Storage Upon receipt store desiccated at -20°C.
Cleavable No
Water Soluble Yes
Form Solid
Molecular Weight (g/mol) 425.39
Solubility Water
Labeling Method Chemical Labeling
Crosslinker Type Heterobifunctional
Chemical Reactivity Amine-Sulfhydryl
Cell Permeability No
Format Standard, Single-use
Product Type Crosslinker
Spacer Medium (10 to 30 Å)
Reactive Moiety Maleimide, NHS Ester
Spacer Arm Length 17.6 Å
Product Line Pierce
PEGylated Yes
9

Thermo Scientific™ BS3 (bis(sulfosuccinimidyl)suberate)

Crosslink amines to amines with BS3; composed of sulfo-NHS-ester groups separated by an 11.4A, water-soluble spacer arm that is useful for cell-surface protein crosslinking.

Cleavable No
Product Type Crosslinker
Molecular Weight (g/mol) 572.43
Solubility Water
PEGylated No
10

Thermo Scientific™ Pierce™ Sulfo-SANPAH, No-Weigh™ Format

Shipping Condition Ambient
Content And Storage Upon receipt store at -20°C protected from light and moisture.
Cleavable By Thiols
Water Soluble Yes
Form Powder
Molecular Weight (g/mol) 492.4
Solubility Water
Labeling Method Chemical Labeling
Crosslinker Type Heterobifunctional
Chemical Reactivity Amine-Nonselective
Cell Permeability No
Format Standard, Single-use
Product Type Crosslinker
Spacer Medium (10 to 30 Å)
Spacer Arm Length 18.2 Å
PEGylated No
11

Invitrogen™ Succinimidyl 3-(2-Pyridyldithio)Propionate (SPDP)  DFS Item

The succinimidyl ester chemically reacts with primary amines and after mild reduction of the dithiol, it can react form a disulfide with other thiols.

12

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.

13

Thermo Scientific™ BS(PEG)5 (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.

Content And Storage Upon receipt store desiccated at -20°C.
Description BS(PEG)5
Cleavable No
Water Soluble Yes
Molecular Weight (g/mol) 532.5
Solubility Water
Labeling Method Chemical Labeling
Crosslinker Type Homobifunctional
Chemical Reactivity Amine-Amine
Cell Permeability No
Format Standard, Single-use
Product Type Crosslinker
Spacer Medium (10 to 30 Å)
Reactive Moiety NHS Ester
Spacer Arm Length 21.7 Å
PEGylated Yes
14

Thermo Scientific™ Sulfo-SMPB (sulfosuccinimidyl 4-(N-maleimidophenyl)butyrate)

Crosslink amines to sulfhydryls with this mid-length, water-soluble crosslinker composed of sulfo-NHS-ester and maleimide groups at ends of an aromatic, 10-atom spacer arm.

15

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.