Building Blocks for Custom SNAP-tag Substrates Selection Chart
NEB offers building blocks that can be used for linkage of the core benzylguanine (BG) and benzylcytosine (BC) moieties to activated esters, primary amines and thiol groups.
| Product | NEB # | Structure | Application | Size |
|---|---|---|---|---|
| BG-NH2 | S9148 | ![]() |
SNAP-tag substrate. Suitable for linkage to NHS esters and other activated carboxylic esters. | 2 mg |
| BG-PEG-NH2 | S9150 | ![]() |
SNAP-tag substrate. PEG-linker gives superior flexibility. Particularly suited for immobilization on solid surfaces. | 2 mg |
| BG-GLA-NHS | S9151 | ![]() |
SNAP-tag substrate. Activated as NHS ester. Reacts with primary amines. | 2 mg |
| BG-Maleimide | S9153 | ![]() |
SNAP-tag substrate. Activated as maleimide. Reacts with thiols. | 2 mg |
| BC-NH2 | S9236 | ![]() |
CLIP-tag substrate. Suitable for linkage to NHS esters and other activated carboxylic esters. | 2 mg |




