8.51087

PyClock

6-Chloro-benzotriazole-1-yloxy-tris-pyrrolidinophosphonium hexafluorophosphate Novabiochem^®

• Synonym(e): 6-Chloro-benzotriazole-1-yloxy-tris-pyrrolidinophosphonium hexafluorophosphate
• Empirische Formel (Hill-System): C₁₈H₂₇ClF₆N₆OP₂
• CAS-Nummer: 893413-42-8
• Molekulargewicht: 554.84
• MDL-Nummer: MFCD14560589
• UNSPSC-Code: 12352107
• NACRES: NA.22

Eigenschaften

• Qualitätsniveau: 200
• Produktlinie: Novabiochem^®
• Assay: ≥98.0% (HPLC)
• Form: powder
• Eignung der Reaktion: reaction type: Coupling Reactions
• Hersteller/Markenname: Novabiochem^®
• mp (Schmelzpunkt): 165-175 °C
• Anwendung(en): peptide synthesis
• Lagertemp.: 2-8°C
• InChI: 1S/C18H27ClN6OP.F6P/c19-16-7-8-17-18(15-16)25(21-20-17)26-27(22-9-1-2-10-22,23-11-3-4-12-23)24-13-5-6-14-24;1-7(2,3,4,5)6/h7-8,15H,1-6,9-14H2;/q+1;-1
• InChIKey: QJZCQEPNBRAYQL-UHFFFAOYSA-N

Beschreibung

Allgemeine Beschreibung

PyClocK is the 6-chloro analog of PyBOP. Reaction of protected amino acids with PyClocK in the presence of base generates the corresponding 6-chloro-1-benzotriazolyl (Cl-OBt) ester. These active esters are considerably more reactive than those produced when using PyBOP or HBTU, owing to 6-chloro-1-hydroxybenzotriazole (Cl-HOBt) being more acidic than HOBt. PyClocK is an excellent coupling reagent for situations where carboxyl activation may be sluggish, such as cyclizations and fragment condensations, as unlike imminium-based reagents such as HBTU and HATU excess PyClocK cannot cause end-capping of peptide chains.


Associated Protocols and Technical Articles
Guide to Selection of Coupling Reagents

Hinweis zur Analyse

Farbe (visuell): weiß bis schwach gelb bis beige
Aussehen der Substanz (visuell): Pulver
Identität (IR): entspricht
Gehalt (HPLC, Fl.%): ≥ 98.0 % (a/a)
Löslichkeit (5% in NMP (1-Methyl-2-Pyrrolidon)): klar

Rechtliche Hinweise

Novabiochem is a registered trademark of Merck KGaA, Darmstadt, Germany

Sicherheitshinweise

• Piktogramme: GHS07
• Signalwort: Warning
• H-Sätze: H315 - H319 - H335
• P-Sätze: P261 - P264 - P271 - P280 - P302 + P352 - P305 + P351 + P338
• Gefahreneinstufungen: Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
• Zielorgane: Respiratory system
• Lagerklassenschlüssel: 11 - Combustible Solids
• WGK: WGK 3
• Flammpunkt (°F): Not applicable
• Flammpunkt (°C): Not applicable