Staurosporine (STS) Sigma (S4400)? Try a better option.

A Depth-Data-Driven Comparison: Critical Reasons Leading Labs are Switching from Sigma to Selleck’s Staurosporine (STS).

Staurosporine (STS) Selleck VS Sigma

Staurosporine (STS)	Selleck(S1421)	Sigma(S4400)
Free Aliquoting Service		N/A
Price	2mg, USD 197.0	1mg, USD 1540.0
Purity	99.87%	98%
Citations	191	484
Technical Support	95.37% response rate within 2 hours	Unknown
Knowledge	Staurosporine (STS) Mechanism of Action: Protein Kinase Inhibition in Mammalian Cell Research Staurosporine (STS) Working Concentration \| Cell Culture \| Treatment Staurosporine (STS) Solubility in DMSO Staurosporine (STS) Storage & Stability Staurosporine (STS) Combination Database Staurosporine (STS) Molecular Weight \| Chemical Structure \| Stock Solution Staurosporine (STS) IC50 for Cell-based and Cell-free Assays Staurosporine (STS) SDS｜MSDS	Unknown

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