Camptothecin (CPT) Sigma (C9911)? Try a better option.

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

Camptothecin (CPT) Selleck VS Sigma

Camptothecin (CPT)	Selleck(S1288)	Sigma(C9911)
Free Aliquoting Service		N/A
Price	100mg, USD 147.0	100mg, USD 144.00
Purity	99.79%	90%
Citations	160	601
Technical Support	95.37% response rate within 2 hours	Unknown
Knowledge	Camptothecin (CPT) Mechanism of Action: TOP1 Inhibition in Tumor Cell Research Camptothecin (CPT) Working Concentration \| Cell Culture \| Treatment Solubility in DMSO Storage Camptothecin (CPT) Combination Database Molecular Weight Camptothecin (CPT) IC50 for Cell-based and Cell-free Assays Camptothecin (CPT) SDS｜MSDS	Unknown

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