JPS491566A - - Google Patents

Info

Publication number
JPS491566A
JPS491566A JP4279772A JP4279772A JPS491566A JP S491566 A JPS491566 A JP S491566A JP 4279772 A JP4279772 A JP 4279772A JP 4279772 A JP4279772 A JP 4279772A JP S491566 A JPS491566 A JP S491566A
Authority
JP
Japan
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP4279772A
Other languages
Japanese (ja)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP4279772A priority Critical patent/JPS491566A/ja
Publication of JPS491566A publication Critical patent/JPS491566A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Nitrogen Condensed Heterocyclic Rings (AREA)
JP4279772A 1972-04-28 1972-04-28 Pending JPS491566A (en])

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4279772A JPS491566A (en]) 1972-04-28 1972-04-28

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4279772A JPS491566A (en]) 1972-04-28 1972-04-28

Publications (1)

Publication Number Publication Date
JPS491566A true JPS491566A (en]) 1974-01-08

Family

ID=12645944

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4279772A Pending JPS491566A (en]) 1972-04-28 1972-04-28

Country Status (1)

Country Link
JP (1) JPS491566A (en])

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994020502A1 (en) * 1993-03-11 1994-09-15 Otsuka Kagaku Kabushiki Kaisha Spiropyran compound, optically active spiropyran compound, and use thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100778A (en) * 1959-04-03 1963-08-13 Ncr Co Derivatives of 1,3,3 trimethyl-spiro (2'h-1'-benzopyran-2,2'-indolene)
US3149120A (en) * 1959-07-16 1964-09-15 Ncr Co 3, 3'-dimethyl-6'-nitro-spiro
US3290331A (en) * 1964-03-30 1966-12-06 Ncr Co 6'no2, 7'-methoxy indolino-benzospiropyrans
US3299079A (en) * 1963-08-14 1967-01-17 Polaroid Corp Chelatable spiro [benzopyran-2, 2'-indoline] derivatives

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100778A (en) * 1959-04-03 1963-08-13 Ncr Co Derivatives of 1,3,3 trimethyl-spiro (2'h-1'-benzopyran-2,2'-indolene)
US3149120A (en) * 1959-07-16 1964-09-15 Ncr Co 3, 3'-dimethyl-6'-nitro-spiro
US3299079A (en) * 1963-08-14 1967-01-17 Polaroid Corp Chelatable spiro [benzopyran-2, 2'-indoline] derivatives
US3290331A (en) * 1964-03-30 1966-12-06 Ncr Co 6'no2, 7'-methoxy indolino-benzospiropyrans

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994020502A1 (en) * 1993-03-11 1994-09-15 Otsuka Kagaku Kabushiki Kaisha Spiropyran compound, optically active spiropyran compound, and use thereof

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