Frequently Asked Questions Live Chat and Frequently Asked Questions are available for this Product. Biochem/physiol Actions L-type Ca2+ channel blocker; induces apoptosis in human glioblastoma cells. Other Notes Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. N7634.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.