NU7441 (KU-57788) Sigma (SML3923)? Try a better option.

A Depth-Data-Driven Comparison: Critical Reasons Leading Labs are Switching from Sigma to Selleck’s NU7441 (KU-57788).

NU7441 (KU-57788) Selleck VS Sigma

NU7441 (KU-57788)	Selleck(S2638)	Sigma(SML3923)
Free Aliquoting Service		N/A
Price	5mg, USD 147.0	10mg, USD 117.00
Purity	99.96%	98%
Citations	304	0
Technical Support	95.37% response rate within 2 hours	Unknown
Knowledge	NU7441 (KU-57788) Mechanism of Action: DNA-PK Inhibition in Mammalian Cell Research NU7441 (KU-57788) Working Concentration \| Cell Culture \| Treatment Solubility in DMSO Storage NU7441 (KU-57788) Combination Database Molecular Weight NU7441 (KU-57788) IC50 for Cell-based and Cell-free Assays NU7441 (KU-57788) SDS｜MSDS	Unknown

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