BE493593A - - Google Patents
Info
- Publication number
- BE493593A BE493593A BE493593DA BE493593A BE 493593 A BE493593 A BE 493593A BE 493593D A BE493593D A BE 493593DA BE 493593 A BE493593 A BE 493593A
- Authority
- BE
- Belgium
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D311/00—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings
- C07D311/02—Heterocyclic compounds containing six-membered rings having one oxygen atom as the only hetero atom, condensed with other rings ortho- or peri-condensed with carbocyclic rings or ring systems
- C07D311/04—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring
- C07D311/42—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4
- C07D311/44—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4 with one hydrogen atom in position 3
- C07D311/46—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4 with one hydrogen atom in position 3 unsubstituted in the carbocyclic ring
- C07D311/48—Benzo[b]pyrans, not hydrogenated in the carbocyclic ring with oxygen or sulfur atoms in positions 2 and 4 with one hydrogen atom in position 3 unsubstituted in the carbocyclic ring with two such benzopyran radicals linked together by a carbon chain
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
- Pyrane Compounds (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Plural Heterocyclic Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CS280975X | 1949-02-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE493593A true BE493593A (xx) |
Family
ID=5451957
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE493593D BE493593A (xx) | 1949-02-14 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US2647131A (xx) |
| BE (1) | BE493593A (xx) |
| CH (1) | CH280975A (xx) |
| FR (1) | FR1041556A (xx) |
| GB (1) | GB672357A (xx) |
| NL (1) | NL70633C (xx) |
-
0
- NL NL70633D patent/NL70633C/xx active
- BE BE493593D patent/BE493593A/xx unknown
-
1950
- 1950-01-26 CH CH280975D patent/CH280975A/de unknown
- 1950-02-02 FR FR1041556D patent/FR1041556A/fr not_active Expired
- 1950-02-04 US US142534A patent/US2647131A/en not_active Expired - Lifetime
- 1950-02-14 GB GB3734/50A patent/GB672357A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL70633C (xx) | |
| GB672357A (en) | 1952-05-21 |
| FR1041556A (fr) | 1953-10-26 |
| US2647131A (en) | 1953-07-28 |
| CH280975A (de) | 1952-02-15 |