Catalog No: SBB-PS0130, 250 µgKTSAVLQ-Rhodamine110-y-Glu (Lys-Tyr-Ser- Ala-Val-Leu-Glu-Rh110-y-Glu) is a Rhodamine 110 labeled fluorogenic peptidyl substrate that can be hydrolyzed by 3CLpro (Mpro) SBB-DE0129 a Chemotrypsin like protease, cleaving between the glutamine and the Rhodamine110 fluorophore. Prior hydrolysis, the Rhodamine110 moiety is quenched resulting in a very low background.