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SNAP-tag is a self-labeling protein derived from human O6-alkylguanine-DNA-alkyltransferase. SNAP-tag reacts with covalently with O6-benzylguanine derivatives. SNAP-TMR can be used for protein fluorescent labeling.

Product Name SNAP-TMR
CAS Number 1418275-35-0 
Related CAS 761452-01-1, 1004359-67-4
Molecular Formula C38H34N8O5
Molecular Weight 682.741
Purity (HPLC) >= 95%
Physical Appearance Dark Purple Solid
Optical Properties Abs/Em Maxima: 555/585 nm
Solubility DMSO, DMF
Shipping Conditions Shipped on gel packs
Storage Conditions Store at -20°C and protected from light
Shelf Life 12 months after the date of delivery
Regulatory Statement For Research Use Only


Wilhelm, J., Kuhn, S., Tarnawski, M., Gotthard, G., Tunnermann, J., Tanzer, T., Karpenko, J., Mertes, N., Xue, L., Uhrig, U., Reinstein, J., Hiblot, J., & Johnsson, K. (2021). Kinetic and Structural Characterization of the Self-Labeling Protein Tags HaloTag7, SNAP-tag, and CLIP-tag. Biochemistry, 60(33), 2560–2575.


Datasheet         MSDS


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