Name | Scopine Di(2-thienyl) Glycolate |
Synonyms | N-DeMethyl TiotropiuM Tiotropium EP Impurity B Scopine-2,2-dithienyl glycolate SCOPINE-2,2-DITHIENYL GLYCOLATE Scopine Di(2-thienyl) Glycolate 2-Thiopheneacetic acid, -hydroxy--2-thienyl-, (1,2,4,5,7) Scopine di(2-thienyl)glycolate scopine-2-dithienyl glycolate 2-thiopheneacetic acid, a-hydroxy-a-2th ( Di(2-thienyl) Glycolate ) (1R,2R,4S,5S,7s)-9-Methyl-3-oxa-9-azatricyclo[3.3.1.02,4]nonan-7-yl 2-hydroxy-2,2-dithiophen-2-ylacetate α-Hydroxy-α-2-thienyl-2-thiopheneacetic Acid (1α,2β,4β,5α,7β)-9-Methyl-3-oxa-9-azatricyclo[3.3.1.02,4]non-7-yl Ester |
CAS | 136310-64-0 |
EINECS | 603-953-6 |
InChI | InChI=1/C18H19NO4S2/c1-19-11-8-10(9-12(19)16-15(11)23-16)22-17(20)18(21,13-4-2-6-24-13)14-5-3-7-25-14/h2-7,10-12,15-16,21H,8-9H2,1H3 |
Molecular Formula | C18H19NO4S2 |
Molar Mass | 377.48 |
Density | 1.48±0.1 g/cm3(Predicted) |
Melting Point | 138-140°C |
Boling Point | 542.3±50.0 °C(Predicted) |
Flash Point | 281.7°C |
Vapor Presure | 1.37E-12mmHg at 25°C |
pKa | 10.32±0.29(Predicted) |
Storage Condition | Keep in dark place,Sealed in dry,2-8°C |
Refractive Index | 1.687 |
application | scopolamine di (2-thienyl) glycolate is mainly used for the synthesis of tiotropium bromide, such as the transesterification reaction between scopolamine and methyl 2, 2-bis (2-thienyl) glycolate to form 2, 2-bis (2-thienyl) scopolamine glycolate, and finally quaternary ammonium salting reaction with methyl bromide to obtain anhydrous tiotropium bromide; it can also pass 2, 2-bis (2-thienyl) methyl glycolate and scopolol in the presence of sodium metal or sodium methoxide in the molten state of toluene solvent or solvent-free. |