Formulation: A solid
Formal Name: N-[(butyl-1,1,2,2,3,3,4,4,4-d9-amino)carbonyl]-4-methyl-benzenesulfonamide
Purity: ≥99% deuterated forms (d1-d9)
Formula Markup: C12H9D9N2O3S
Formula Weight: 279,4
Shelf life (days): 1460
CAS Number: 1219794-57-6
Notes: Tolbutamide-d9 is intended for use as an internal standard for the quantification of tolbutamide (Item No. 19888) by GC- or LC-MS. Tolbutamide is an inhibitor of sulfonylurea receptor 1 (SUR1) linked to ATP-sensitive potassium channel Kir6.2 (IC50 = 4.9 µM).{34125} It is selective for SUR1/Kir6.2 over SUR2A/Kir6.2 and SUR2B/Kir6.2 channels (IC50s = 85 and 88 µM, respectively). Tolbutamide increases glucose-induced insulin secretion and calcium influx in isolated mouse pancreatic islets.{54189} In vivo, tolbutamide (80 mg/kg) reduces blood glucose levels in a mouse model of diabetes induced by streptozotocin (STZ; Item No. 13104).{54190} Formulations containing tolbutamide have been used in the treatment of type 2 diabetes.