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Availability: In stock

(Ethyl cyano(hydroxyimino)acetato-O₂)-tri-(1-pyrrolidinyl)-phosphonium hexafluorophosphate


Product No. Pack Size Available ADS InfoAnalytical Data Sheet List Price Online Order Price Qty
4071639.0005 5 g Ships within 3-5 business days  
CHF 71.00
CHF 66.03 (7%)
4071639.0025 25 g Ships within 3-5 business days  
CHF 153.00
CHF 142.29 (7%)
4071639.0100 100 g Ships within 1 business day ADSExemplary Data Sheet of a current available lot.
CHF 459.00
CHF 426.87 (7%)


A highly efficient coupling reagent. PyOxim is more reactive than TBTU or PyBOP. It is about as reactive as COMU; and, as COMU, PyOxim is safer to handle and less allergenic than HOBt-based coupling reagents. As PyOxim represents a phosphonium-type coupling reagent, N-terminal guanidinylation as a side-reaction during coupling is avoided.
Catalog Number Q-2760
Molecular Formula C₁₇H₂₉F₆N₅O₃P₂
Relative Molecular Mass 527.39
CAS Registry Number 153433-21-7
Storage Conditions -20 ± 5 °C