5-(Difluoromethoxy)-2-mercapto-1H-benzimidazole
Synonym(s):5-(Difluoromethoxy)-2-mercapto-1H-benzimidazole;Pantoprazole Sodium Sesquihydrate Impurity C (Ph. Eur.)
- CAS NO.：97963-62-7
- Empirical Formula: C8H6F2N2OS
- Molecular Weight: 216.21
- MDL number: MFCD00467504
- EINECS: 417-780-7;619-308-7
- SAFETY DATA SHEET (SDS)
- Update Date: 2024-12-04 20:40:58
What is 5-(Difluoromethoxy)-2-mercapto-1H-benzimidazole?
Description
5-(Difluoromethoxy)-2-mercapto-1H-benzimidazole is a thiol derivative of benzimidazole with a group substituted at the 5-position by difluoromethoxy. 5-(Difluoromethoxy)-2-mercapto-1H-benzimidazole is one of the main intermediates of pantoprazole, a proton pump inhibitor for the treatment of gastric ulcers. Pantoprazole acts by reducing gastric acid secretion and inactivating H+-ATPase in the stomach. The synthesis of pantoprazole begins with the coupling of 5-difluoromethoxy-2-mercaptobenzimidazole with 2-chloromethyl-3,4-dimethoxypyridinium hydrochloride followed by an oxidation reaction.
Chemical properties
Pale Yellow Solid
The Uses of 5-(Difluoromethoxy)-2-mercapto-1H-benzimidazole
Pantoprazole EP Impurity C. Pantoprazole USP Related Compound C.
What are the applications of Application
5-(Difluoromethoxy)-2-mercapto-1H-benzimidazole is used as an intermediate in Pantoprazole sodium, a drug for the treatment of gastro-oesophageal reflux disease (GORD) and gastro-intestinal disorders. It is also utilised in the preparation of α-glucosidase inhibitors for their efficacy in antidiabetic activity.
General Description
5-(Difluoromethoxy)-2-mercapto-1H-benzimidazole may be used in the synthesis of pantoprazole, a drug for treating gastroesophageal reflux disease and gastrointestinal disorders.
Properties of 5-(Difluoromethoxy)-2-mercapto-1H-benzimidazole
| Melting point: | 239-243 °C(lit.) |
| Boiling point: | 303.5±52.0 °C(Predicted) |
| Density | 1.52±0.1 g/cm3(Predicted) |
| storage temp. | Sealed in dry,Store in freezer, under -20°C |
| solubility | DMSO (Slightly), Methanol (Slightly) |
| form | neat |
| pka | 9.77±0.30(Predicted) |
| color | Pale Yellow |
| CAS DataBase Reference | 97963-62-7(CAS DataBase Reference) |
Safety information for 5-(Difluoromethoxy)-2-mercapto-1H-benzimidazole
| Signal word | Warning |
| Pictogram(s) |
 Exclamation Mark Irritant GHS07 |
| GHS Hazard Statements |
H315:Skin corrosion/irritation H319:Serious eye damage/eye irritation H335:Specific target organ toxicity, single exposure;Respiratory tract irritation |
| Precautionary Statement Codes |
P261:Avoid breathing dust/fume/gas/mist/vapours/spray. P264:Wash hands thoroughly after handling. P264:Wash skin thouroughly after handling. P271:Use only outdoors or in a well-ventilated area. P280:Wear protective gloves/protective clothing/eye protection/face protection. P302+P352:IF ON SKIN: wash with plenty of soap and water. P305+P351+P338:IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. |
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