Ondansetron-13C-d3

Ondansetron-13C-d3 is intended for use as an internal standard for the quantification of ondansetron by GC- or LC-MS. Ondansetron is an antagonist of the serotonin (5-HT) receptor subtype 5-HT3 receptor (Ki = 1.6 nM). It is selective for the 5-HT3 receptor over the 5-HT1A-D, 5-HT2, and 5-HT4 receptors (Kis = >1,200 nM). It inhibits 5-HT-induced depolarization of isolated rat vagus nerve and contraction of isolated guinea pig ilium longitudinal muscle-myenteric plexus preparations in a concentration-dependent manner ex vivo. In a ferret model of cisplatin-induced emesis, ondansetron reduces the number of retching and vomiting episodes and increases the latency time to vomit when administered at a dose of 0.01 mg/kg and eliminates retching and vomiting when administered at a dose of 0.1 mg/kg. Ondansetron (0.5 and 1 mg/kg) also decreases immobility time in a forced swim test and increases time spent in the light chamber and latency to leave the light chamber in the light/dark exploration test in a mouse model of diabetes induced by streptozotocin (STZ, Cay-13104), indicating antidepressant-like and anxiolytic activities. Formulations containing ondansetron have been used in the treatment of nausea and vomiting associated with chemotherapy, radiotherapy, or following surgery.Formal Name: 9-(methyl-13C-d3)-3-((2-methyl-1H-imidazol-1-yl)methyl)-1,2,3,9-tetrahydro-4H-carbazol-4-one. CAS Number: 2699607-85-5. Molecular Formula: C17[13C]H16D3N3O. Formula Weight: 297.4. Purity: >99% deuterated forms (d1-d3). Formulation: (Request formulation change), A solid. Solubility: DMSO: 0.1 mg/ml. SMILES: O=C1C(CN2C(C)=NC=C2)CCC3=C1C(C=CC=C4)=C4N3[13C]([2H])([2H])[2H]. InChi Code: InChI=1S/C18H19N3O/c1-12-19-9-10-21(12)11-13-7-8-16-17(18(13)22)14-5-3-4-6-15(14)20(16)2/h3-6,9-10,13H,7-8,11H2,1-2H3/i2+1D3. InChi Key: FELGMEQIXOGIFQ-JVXUGDAPSA-N.