CP-690550 (Tofacitinib) Citrate Sigma (PZ0017)? Try a better option.

A Depth-Data-Driven Comparison: Critical Reasons Leading Labs are Switching from Sigma to Selleck’s CP-690550 (Tofacitinib) Citrate.

CP-690550 (Tofacitinib) Citrate Selleck VS Sigma

CP-690550 (Tofacitinib) Citrate	Selleck(S5001)	Sigma(PZ0017)
Free Aliquoting Service		N/A
Price	10mg, USD 147.0	Unknown
Purity	99.99%	98%
Citations	190	42
Technical Support	95.37% response rate within 2 hours	Unknown
Knowledge	CP-690550 (Tofacitinib) Citrate Mechanism of Action: JAK3 Inhibition in Lymphocyte Research CP-690550 (Tofacitinib) Citrate Working Concentration \| Cell Culture \| Treatment Solubility in DMSO Storage CP-690550 (Tofacitinib) Citrate Combination Database Molecular Weight CP-690550 (Tofacitinib) Citrate SDS｜MSDS	Unknown

Sigma is sourced from their official website（1/20/2026）