Crystals of phenylalanine derivatives and production methods thereof
The present invention provides crystals of phenylalanine derivatives of the formula (I): and particularly α-type, γ-type, ε-type, η-type, and θ-type crystals thereof. These crystals are excellent in preservation stability or moisture resistance. They can also be produced on an industrial scale.
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | The present invention provides crystals of phenylalanine derivatives of the formula (I): and particularly α-type, γ-type, ε-type, η-type, and θ-type crystals thereof. These crystals are excellent in preservation stability or moisture resistance. They can also be produced on an industrial scale. |
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