4-Isobutoxybenzylamine
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Chemical Product Description & Applications
4-Isobutoxybenzylamine is a primary amine building block used to introduce a para-isobutoxybenzyl fragment into pharmaceutical intermediates. Its amino group forms urea and amide bonds, while the aromatic ether portion transfers the required lipophilic substituent. In pimavanserin routes, the amine-derived fragment becomes one side of the unsymmetrical urea structure.
The selected material is the free amine rather than the acetate or hydrochloride. That form provides the nucleophilic nitrogen directly for carbonyl activation and coupling chemistry. The isobutoxy group is already installed on the aromatic ring, separating ether construction from later urea formation. This makes the compound a defined fragment feedstock rather than a general benzylamine substitute with interchangeable ring substitution.
Typical Applications
- Pimavanserin urea assembly: Used in routes that activate the benzylamine as a carbamoyl intermediate and combine it with the complementary substituted piperidinylamine to form the target unsymmetrical urea.
- Isobutoxybenzyl amide derivatives: Used as the amine component in acylation chemistry, introducing the same substituted aromatic ether fragment into amide-containing synthetic intermediates.
Specifications
| Parameter | Specification | Test Method |
|---|---|---|
| Appearance | Clear liquid; color consistent with the reference sample | Visual inspection |
| Identification | Consistent with authenticated reference | FTIR fingerprint comparison |
| Chromatographic purity | ≥99.0 area% | GC-FID |
| Total organic impurities | ≤1.0 area% | GC-FID, area normalization |
| Water | ≤0.20% w/w | Karl Fischer titration |
| Nonvolatile residue | ≤0.10% w/w | Gravimetric evaporation residue |
Specifications describe the standard grade. Tolerance, test method and documentation package are confirmed per order.
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