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((4-(4-fluorophenyl)-6-isopropyl-2-(N-methylmethylsulfonamido)pyrimidin-5-yl)methyl)triphenylphosphonium bromide; CAS No.: 885477-83-8; As a worldwide chemical supplier, ChemShuttle provides phosphonium salts for ylide generation in olefination reactions. The triphenylphosphonium bromide moiety enables efficient Wittig reactions for statin side chain construction. Our quaternization process achieves >99% conversion through phase-transfer catalysis. The product s stability under anhydrous conditions ensures consistent performance in large-scale API synthesis.