Crystal of amino acid ester salt and process for producing the same
US7205433B2 · kind B2 · utility
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20Claims
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Key dates
| Filing date | Feb 23, 2005 |
| Grant date | Apr 17, 2007 |
| Priority date | — |
| Expiry date | Oct 7, 2025 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C309/30
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention provides a novel crystal of alanine alkyl ester sulfonate having low hygroscopicity and low corrosiveness, which can be produced industrially economically. The present invention provides crystals of alanine alkyl ester sulfonates represented by formula (1):wherein R1 is a methyl group or an ethyl group, provided that when R1 is a methyl group, R2is an ethylphenyl group or a dimethylphenyl group; and when R1 is an ethyl group, R2 is a methyl group, a phenyl group, a chlorophenyl group, an ethylphenyl group, or a dimethylphenyl group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.