Aprotinin Sigma (A1153)? Try a better option.

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

Aprotinin Selleck VS Sigma

Aprotinin	Selleck(S7377)	Sigma(A1153)
Free Aliquoting Service		N/A
Price	10mg, USD 147.0	1mg, USD 72.10
Purity	99.81%	98%
Citations	4	0
Technical Support	95.37% response rate within 2 hours	Unknown
Knowledge	Aprotinin Mechanism of Action: TMPRSS2 Inhibition in Respiratory Epithelial Cells Research Aprotinin: Selectivity & Specificity Aprotinin Working Concentration \| Cell Culture \| Treatment Solubility in DMSO Storage Aprotinin Combination Database Molecular Weight Aprotinin IC50 for Cell-based and Cell-free Assays Aprotinin SDS｜MSDS	Unknown

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