6x-His (trifluoroacetate salt)

6x-His is a polyhistidine peptide tag. It has been used in various applications, including affinity purification, addition to the sequences of recombinant proteins to selectively pull-down those proteins, and structural biology applications. Formal Name: L-histidyl-L-histidyl-L-histidyl-L-histidyl-L-histidyl-L-histidine, trifluoroacetate salt. Synonyms: Hexa-His His6 His-His-His-His-His-His-OH. Molecular Formula: C36H44N18O7  XCF3COOH. Formula Weight: 840.9. Purity: >98%. Formulation (Request formulation change): A solid. Peptide Sequence: HHHHHH-OH. Solubility: DMSO: Sparingly Soluble: 1-10 mg/ml Ethanol: Sparingly Soluble: 1-10 mg/ml PBS pH 7.2: Soluble: >10 mg/ml. SMILES: N[C@@H](CC1=CN=CN1)C(N[C@@H](CC2=CN=CN2)C(N[C@@H](CC3=CN=CN3)C(N[C@H](C(N[C@H](C(N[C@H](C(O)=O)CC4=CN=CN4)=O)CC5=CN=CN5)=O)CC6=CN=CN6)=O)=O)=O.O=C(O)C(F)(F)F. InChi Code: InChI=1S/C36H44N18O7.C2HF3O2/c37-25(1-19-7-38-13-44-19)31(55)50-26(2-20-8-39-14-45-20)32(56)51-27(3-21-9-40-15-46-21)33(57)52-28(4-22-10-41-16-47-22)34(58)53-29(5-23-11-42-17-48-23)35(59)54-30(36(60)61)6-24-12-43-18-49-24,3-2(4,5)1(6)7/h7-18,25-30H,1-6,37H2,(H,38,44)(H,39,45)(H,40,46)(H,41,47)(H,42,48)(H,43,49)(H,50,55)(H,51,56)(H,52,57)(H,53,58)(H,54,59)(H,60,61),(H,6,7)/t25-,26-,27-,28-,29-,30-,/m0./s1. InChi Key: MAXXJEOKEOXUTK-FLQHCAAPSA-N. Storage: -20°C. Stability: > 4 years.