Nonsolvate-form crystal of polymethine compound and process for producing the same
A novel nonsolvate-form crystal of polymethine compound is provided which has good stability in solution, shows a high gram extinction coefficient, is excellent in storage stability, is easy to handle and is highly sensitive to general-purpose semiconductor lasers. Thus is provided a nonsolvate-form...
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Main Authors | , , |
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Format | Patent |
Language | English |
Published |
03.02.2009
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Subjects | |
Online Access | Get full text |
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Summary: | A novel nonsolvate-form crystal of polymethine compound is provided which has good stability in solution, shows a high gram extinction coefficient, is excellent in storage stability, is easy to handle and is highly sensitive to general-purpose semiconductor lasers. Thus is provided a nonsolvate-form crystal of polymethine compound of the formula (I) given below as well as a process for producing the nonsolvate-form crystal of polymethine compound of formula (I) which comprises reacting a polymethine ether compound of the formula (II) given below with hydrochloric acid or hydrobromic acid. (In the above formula, X represents Cl or Br.) (In the above formula, R represents an alkyl group, an alkoxyalkyl group or an optionally substituted aryl group.) |
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Bibliography: | Application Number: US20040579142 |