Sigma Aldrich (369)
N-[Tris(hydroxymethyl)-methyl]-2-aminoethanesulfonic acid
Buffer substance TESCAS No: 7365-44-8 / MW: 229.24
MES hemisodium salt
free-flowing, Redi-Dri™, ≥98%CAS No: 117961-21-4 / MF: C₆H₁₃NO₄S·0.5Na / MW: 206.73
Imidazole
Molecular Biology, ≥99% (titration), free-flowing, Redi-Dri™CAS No: 288-32-4 / MF: C₃H₄N₂ / MW: 68.08
2,2-Bis(hydroxyethyl)-(iminotris)- (hydroxymethyl)-methane
BIS-TRISCAS No: 6976-37-0 / MF: C₈H₁₉NO₅ / MW: 209.24
ACES
anhydrous, free-flowing, Redi-Dri™, ≥99.0%CAS No: 7365-82-4 / MF: C₄H₁₀N₂O₄S / MW: 182.20
Triethanolamine hydrochloride
GR for analysisCAS No: 637-39-8 / MF: C₆H₁₅NO₃ · xHCl / MW: 149.19 (free base basis)
MES hydrate
free-flowing, Redi-Dri™, ≥99.0%CAS No: 1266615-59-1 / MF: C₆H₁₃NO₄S · xH₂O / MW: 195.24 (anhydrous basis)
BIS-TRIS
anhydrous, free-flowing, Redi-Dri™, ≥98.0%CAS No: 6976-37-0 / MF: C₈H₁₉NO₅ / MW: 209.24
HEPES sodium salt
≥99.5% (titration), free-flowing, Redi-Dri™CAS No: 75277-39-3 / MF: C₈H₁₇N₂NaO₄S / MW: 260.29
Sodium cacodylate trihydrate
BioXtra, ≥98%CAS No: 6131-99-3 / MF: C₂H₆AsNaO₂ · 3H₂O / MW: 214.03
N,N-Bis(2-hydroxyethyl)-2-aminoethanesulfonic acid
pKa (20 °C)7.15, ≥99% (alkalimetric)CAS No: 10191-18-1 / MF: C₆H₁₅NO₅S / MW: 213.25