| 552 / | HD | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| * | DD | ORGANIC COMPOUNDS (Class 532, subclass 1) {11} |
| 208 |  | .~ Polycyclo ring system containing anthracene configured ring system having at least one double bond between ring members and having oxygen single bonded or any atom double bonded directly at the 9- and 10-positions (e.g., anthraquinones, etc.) {19} |
| 209 | DF | .~.~> Phosphorus, selenium, silicon, heavy metal or aluminum containing |
| 210 | DF | .~.~> Nitrogen or carbon double bonded directly at the 9- or 10-position |
| 211 | DF | .~.~> Sulfur bonded directly to oxygen which is single bonded directly at the 9- or 10-position |
| 212 | DF | .~.~> The polycyclo ring system is bonded directly to an additional polycyclo ring system having at least three cyclos (e.g., plural anthracene configured ring systems bonded directly to each other, etc.) |
| 213 | DF | .~.~> The polycyclo ring system and an additional polycyclo ring system having at least three cyclos are bonded directly to the same atom (e.g., plural anthracene configured ring systems bonded directly to the same sulfur, etc.) {1} |
| 218 | DF | .~.~> The polycyclo ring system is attached indirectly by nonionic bonding to an additional polycyclo ring system having at least three cyclos (e.g., plural anthracene ring systems attached indirectly to each other by nonionic bonding, etc.) {1} |
| 220 | DF | .~.~> The polycyclo ring system contains at least four cyclos |
| 221 | DF | .~.~> Sulfur bonded directly at beta position (i.e., 2-, 3-, 6- or 7-position) {4} |
| 234 | DF | .~.~> Sulfur bonded directly at alpha position (i.e., 1-, 4-, 5- or 8-position) {1} |
| 236 | DF | .~.~> Nitrogen bonded directly at beta position (i.e., 2-, 3-, 6- or 7-position) {1} |
| 238 | DF | .~.~> Nitrogen bonded directly at alpha position (i.e., 1-, 4-, 5- or 8-position) {7} |
| 261 | DF | .~.~> Oxygen bonded directly at beta position (i.e., 2-, 3-, 6- or 7-position) |
| 262 | DF | .~.~> Oxygen bonded directly at alpha position (i.e., 1-, 4-, 5-, or 8-position) |
| 263 | DF | .~.~> Halogen bonded directly at beta position (i.e., 2-, 3-, 6-, or 7-position) |
| 264 | DF | .~.~> Halogen bonded directly at alpha position (i.e., 1-, 4-, 5- or 8-position) |
| 265 | DF | .~.~> Carbon bonded directly at beta position (i.e., 2-, 3-, 6- or 7-position) {1} |
| 267 | DF | .~.~> Carbon bonded directly at alpha position (i.e., 1-, 4-, 5- or 8-position) |
| 268 | DF | .~.~> Processes of forming anthraquinone per se or enolic form thereof by reacting an organic acid, aldehyde, anhydride or an indane (e.g., reacting phthalic anhydride, methyl phenylindane, etc.) |
| 269 | DF | .~.~> Processes of forming anthraquinone per se or enolic form thereof utilizing heavy metal containing material (e.g., vanadium catalyst utilized, etc.) {1} |