| Class 544 | ORGANIC COMPOUNDS -- PART OF THE CLASS 532-570 SERIES |
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| This Class 544 is considered to be an integral part of Class 260 (see the Class 260 schedule for the position of this Class in schedule hierarchy). This Class retains all pertinent definitions and class lines of Class 260. | ||
| ORGANIC COMPOUNDS (CLASS 532, SUBCLASS 1) |
 HETEROCYCLIC CARBON COMPOUNDS CONTAINING A HETERO RING HAVING CHALCOGEN (I.E., OXYGEN, SULFUR, SELENIUM, OR TELLURIUM) OR NITROGEN AS THE ONLY RING HETERO ATOMS (Class 540, subclass 1) |
![[List of Pre Grant Publications for class 544 subclass 1]](../as.gif) | ![[List of Patents for class 544 subclass 1]](../ps.gif) | 1 |  Hetero ring is six-membered having two or more ring hetero atoms of which at least one is nitrogen (e.g., selenazines, etc.) |
| | 2 |  Six-membered hetero ring consists of oxygen, sulfur, nitrogen and carbon (e.g., oxathiazines, etc.) |
| | 3 | Six-membered hetero ring consists of sulfur, nitrogen, and carbon |
| | 4 |  Heavy metal or aluminum containing |
| | 5 | Plural sulfurs in the six-membered hetero ring (e.g., dithiazines, etc.) |
| | 6 | Spiro |
| | 7 | Plural nitrogens in the six-membered hetero ring (e.g., thiatriazines, etc.) |
| | 14 | Polycyclo ring system having the six-membered hetero ring as one of the cyclos |
| | 31 |  Phenothiazine as three cyclos of polycyclo ring system having at least four cyclos |
| | 32 | Tricyclo ring system having the six-membered hetero ring as one of the cyclos |
| | 33 |  1,2- or 2,1-Thiazine ring in the tricyclo ring system (e.g., hydrogenated 1,2-benzothiazine in tricyclo ring system, etc.) |
| | 34 | Plural ring nitrogens in the tricyclo ring system |
| | 35 | Phenothiazines (including hydrogenated) |
| | 36 |  Purification or recovery |
| | 37 | Nitrogen bonded directly to phenothiazine ring system |
| | 38 | Carbon bonded directly to ring nitrogen of phenothiazine ring system |
| | 47 | Bicyclo ring system having the six-membered hetero ring as one of the cyclos |
| | 53 | 1,3-thiazines |
| | 56 | 1,4-thiazines |
| | 57 | Phosphorus containing |
| | 58.1 | Double bonded divalent chalcogen containing |
| | 58.2 | Divalent chalcogen double bonded directly to the thiazine ring |
| | 58.4 | Having -C(=X)-, wherein X is chalcogen, bonded directly to the thiazine ring |
| | 58.5 | Additional hetero ring containing |
| | 59 | Thiomorpholines (i.e., fully hydrogenated 1,4-thiazines) |
| | 63 | Six-membered hetero ring consists of oxygen, nitrogen and carbon (e.g., 1,2-oxazines, etc) |
| | 64 | Heavy metal or aluminum containing |
| | 65 | Plural oxygens in the six-membered hetero ring |
| | 66 | Plural nitrogens in the six-membered hetero ring |
| | 69 | Boron or silicon containing |
| | 70 | Spiro |
| | 72 | Plural oxazine rings |
| | 73 | Polycyclo ring system having oxazine ring as at least one of the cyclos |
| | 78 | Plural morpholine rings (i.e., plural fully hydrogenated 1, 4-oxazine rings) |
| | 79 | Polycyclo ring system |
| | 82 | Additional nitrogen containing hetero ring (e.g., thiazole, etc.) |
| | 84 | Phosphorus attached directly or indirectly to a morpholine ring by nonionic bonding |
| | 85 | Sulfur attached directly or indirectly to a morpholine ring by nonionic bonding |
| | 86 | Nitrogen attached directly or indirectly to a morpholine ring by nonionic bonding |
| | 87 | Oxygen attached directly or indirectly to a morpholine ring by nonionic bonding |
| | 88 | 1,3-Oxazines |
| | 89 | Polycyclo ring system having the oxazine ring as one of the cyclos |
| | 90 | Bicyclo ring system having the oxazine ring as one of the cyclos |
| | 91 | Three or more ring hetero atoms in the bicyclo ring system |
| | 92 | Chalcogen bonded directly to the oxazine ring |
| | 95 | Three or more ring hetero atoms in the polycyclo ring system |
| | 96 | Additional hetero ring containing |
| | 97 | Chalcogen bonded directly to the oxazine ring |
| | 98 | 1,4-Oxazines |
| | 99 | Polycyclo ring system having the oxazine ring as one of the cyclos |
| | 100 | Anthrone or anthraquinone in the polycyclo ring system |
| | 101 | Tricyclo ring system having the oxazine ring as one of the cyclos |
| | 105 | Bicyclo ring system having the oxazine ring as one of the cyclos (e.g., benzoxazines, etc.) |
| | 106 | Morpholines (i.e., fully hydrogenated 1,4-oxazines |
| | 107 | Addition salts of morpholine which is unsubstituted or hydrocarbyl substituted only |
| | 108 | N, N-dihydrocarbyl morpholinium |
| | 109 | Hetero ring in ionically bonded moiety |
| | 110 | Phosphorus or sulfur in ionically bonded moiety |
| | 111 | Additional nitrogen containing hetero ring (e.g., thiazetidine, etc.) |
| | 112 | Triazine ring |
| | 114 | Diazine ring |
| | 115 |  The diazine ring is one of the cyclos in a polycyclo ring system |
| | 120 | 1,4-Diazine ring |
| | 122 | 1,3-Diazine ring |
| | 124 | Six-membered ring consisting of one nitrogen and five carbons (e.g., pyridine, etc.) |
| | 125 | The additional six-membered hetero ring is one of the cyclos in a polycyclo ring system |
| | 126 |  The additional six-membered hetero ring is one of the cyclos in a tricyclo ring system |
| | 127 | The additional six-membered hetero ring is one of the cyclos in a bicyclo ring system |
| | 129 | Piperidine ring |
| | 131 | Double bonded divalent chalcogen containing |
| | 132 | Five-membered hetero ring having two or more ring hetero atoms of which at least one is nitrogen |
| | 133 | The five-membered hetero ring has at least sulfur and nitrogen as ring hetero atoms |
| | 134 | Plural sulfurs or nitrogens in the five-membered hetero ring (e.g., thiatriazole, etc.) |
| | 135 | Benzothiazoles (including hydrogenated) |
| | 137 | The five-membered hetero ring has at least oxygen and nitrogen as ring hetero atoms |
| | 139 | 1,3-Diazole ring (including hydrogenated) |
| | 140 | 1,2-Diazole ring (including hydrogenated) |
| | 141 | Five-membered hetero ring consisting of one nitrogen and four carbons |
| | 145 | Sulfur containing hetero ring (e.g., thioxane, etc.) |
| | 147 | Additional oxygen containing hetero ring |
| | 148 | Plural ring hetero atoms in the additional hetero ring |
| | 149 | The additional hetero ring is six-membered |
| | 152 | The additional hetero ring is five-membered |
| | 154 | Polycyclo-carbocyclic ring system having at least three cyclos |
| | 157 | Phosphorus attached directly or indirectly to morpholine ring by nonionic bonding |
| | 158 | Sulfur attached directly or indirectly to morpholine ring by nonionic bonding |
| | 159 | Nitrogen attached directly or indirectly to morpholine ring by nonionic bonding |
| | 161 | Double bonded divalent sulfur |
| | 162 | Nitrogen attached directed or indirectly to morpholine ring by nonionic bonding |
| | 163 | Cyano containing |
| | 164 | Morpholine ring bonded directly to the nitrogen |
| | 165 | Carbocyclic ring bonded directly to the nitrogen |
| | 166 | Morpholine ring bonded directly to the carbocyclic ring |
| | 167 | Nitro bonded directly to the carbocyclic ring |
| | 168 | Oxygen double bonded and acyclic nitrogen bonded directly to the same carbon |
| | 170 | Oxygen attched directly or indirectly to morpholine ring by nonionic bonding |
| | 171 | The oxygen is in a -COO- group |
| | 173 | The oxygen is bonded directly to a ring |
| | 175 | The oxygen is in a carbonyl group |
| | 177 | Ether containing |
| | 178 | N-hydrocarbyl morpholines |
| | 179 | Tetrazines |
| | 180 | Triazines |
| | 181 | Heavy metal or aluminum containing |
| | 182 | Asymmetrical (e.g., 1, 2, 4-triazines, etc.) |
| | 185 | Hexamethylenetetramines |
| | 187 | Anthrone or anthraquinone containing |
| | 188 | Polycyclo ring system having the anthrone or anthraquinone and at least one hetero ring as cyclos |
| | 189 | Sulfur containing |
| | 190 | Cyanuric chloride or dichloroisocyanuric acid salt |
| | 192 | Cyanuric acid per se or salt thereof |
| | 193 | Trimerization process to form the triazine ring |
| | 193.1 | Stilbene containing |
| | 194 | Substituent nitrogen bonded directly to carbon of the triazine ring |
| | 195 | Phosphorus containing |
| | 196 | Three substituent nitrogens bonded directly to the three carbons of the triazine ring |
| | 197 | Additional ring containing |
| | 199 | Halogen or sulfur containing |
| | 200 | Melamine per se, or salt thereof |
| | 204 | Two substituent nitrogens bonded directly to two carbons of the triazine ring |
| | 211 | Additional ring containing |
| | 213 | Sulfur containing |
| | 214 | Phosphorus containing |
| | 215 | Chalcogen or halogen containing substituent |
| | 224 | The six-membered hetero ring consists of two nitrogens and four carbons (e.g., 1,2-diazines, etc.) |
| | 225 | Heavy metal or aluminum containing |
| | 229 | Boron or silicon containing |
| | 230 | Spiro |
| | 232 | Phosphorus attached directly or indirectly to a 1,2-diazine ring by nonionic bonding |
| | 233 | Polycyclo ring system having a 1,2-diazine ring as one of the cyclos |
| | 234 | Tricyclo ring system having the 1,2-diazine ring as one of the cyclos |
| | 235 | Bicyclo ring system having the 1,2-diazine ring as one of the cyclos |
| | 238 | 1,2-diazines which contain an additional hetero ring |
| | 239 | Chalcogen bonded directly to ring carbon of a 1,2-diazine ring |
| | 240 | Plural chalcogens bonded directly |
| | 241 | Halogen attached directly to the 1,2-diazine ring by nonionic bonding |
| | 242 | 1,3-diazines |
| | 243 | Phosphorus attached directly or indirectly to the diazine ring by nonionic bonding |
| | 245 | Polycyclo ring system having the diazine ring as one of the cyclos |
| | 246 | Tetracyclo ring system having the diazine ring as one of the cyclos |
| | 247 | Three or more ring hetero atoms in the tetracyclo ring system |
| | 248 | Ring carbon is shared by three of the cyclos (e.g., anthrapyrimidine, etc.) |
| | 249 | Tricyclo ring system having the diazine ring as one of the cyclos |
| | 250 | Three or more ring hetero atoms in the tricyclo ring system |
| | 252 | Ring nitrogen is shared by two of the cyclos |
| | 253 | Bicyclo ring system having the diazine ring as one of the cyclos |
| | 254 | At least five ring hetero atoms in the bicyclo ring system |
| | 255 | Four ring hetero atoms in the bicyclo ring system |
| | 256 | Four ring nitrogens in the bicyclo ring system |
| | 257 | Pteridines (including hydrogenated) |
| | 262 | The other cyclo in the bicyclo ring system is five-membered |
| | 263 |  Ring nitrogen is shared by two cyclos |
| | 264 | Purines (including hydrogenated) |
| | 265 |  Chalcogen bonded directly to ring carbon of the purine ring system |
| | 266 |  At 2-,6-, and 8-positions |
| | 267 | At 2- and 6-positions (e.g., theophyllines, etc.) |
| | 268 |  Additional polycyclo ring system, which is not another purine, having a hetero ring as one of the cyclos |
| | 269 | Additional hetero ring which is unsaturated and is not one of the cyclos of a purine ring system |
| | 272 | Nitrogen attached directly or indirectly to the purine ring system by nonionc bonding |
| | 273 | Positions other than 2- and 6- are unsubstituted or hydrocarbyl or hydro- carboyl substituted only (e.g., theophylline, etc.) |
| | 274 | Caffeine per se, theobromine per se, or salt thereof |
| | 276 | Nitrogen attached directly or indirectly to the purine ring system by nonionic bonding |
| | 277 | Nitrogen attached directly or indirectly to the purine ring system by nonionic bonding |
| | 278 | Three ring hetero atoms in the bicyclo ring system |
| | 282 | Ring nitrogen is shared by two cyclos |
| | 283 | The other cyclo in the bicyclo ring system is a benzene ring (e.g., quinazoline, etc.) |
| | 284 | Additional nitrogen containing unsaturated hetero ring (e.g., thiazole, etc.) |
| | 285 | Chalcogen bonded directly at 2- and 4-positions |
| | 286 | Chalcogen bonded directly at 2-position |
| | 287 | Chalcogen bonded directly at 4-position |
| | 288 | Sulfur bonded directly at 6-position |
| | 289 | Carbocyclic ring bonded directly at 2-position |
| | 290 | Carbocyclic ring bonded directly at 3-position |
| | 291 | Nitrogen bonded directly at 2- and 4-positions |
| | 292 | Nitrogen bonded directly at 2-position |
| | 293 | Nitrogen bonded directly at 4-position |
| | 294 | Polycyclo-carbocyclic ring system having at least three cyclos |
| | 295 | Plural diazine rings |
| | 297 | Nitrogen attached directly at 2-position by nonionic bonding and sulfur bonded directly to the nitrogen |
| | 298 | Chalcogen bonded directly to diazine ring carbon |
| | 299 | At 2-, 4-, and 6-positions (e.g., barbituric acid, etc.) |
| | 300 | Additional hetero ring which is unsaturated |
| | 301 | Nitrogen attached directly or indirectly to the diazine ring by nonionic bonding |
| | 302 | Additional chalcogen attached directly or indirectly to the diazine ring by nonionic bonding |
| | 303 | Halogen attached directly or indirectly to the diazine ring by nonionic bonding |
| | 304 | Alicyclic ring attached directly or indirectly to the diazine ring by nonionic bonding |
| | 305 | Phenyl bonded directly at 5-position |
| | 306 | Acyclic ethylenic or acetylenic unsaturation containing |
| | 307 | Plural alkyl groups bonded directly at 5-position |
| | 309 | At 2-position and at 4- or 6-position |
| | 310 | Additional hetero ring which is unsaturated |
| | 311 | Nitrogen attached directly or indirectly to the diazine ring by nonionic bonding |
| | 313 | Halogen attached directly to the diazine ring by nonionic bonding |
| | 314 | Additional chalcogen attached directly or indirectly to the diazine ring by nonionic bonding |
| | 315 | At 2-position |
| | 316 | Nitrogen attached directly or indirectly to the diazine ring by nonionic bonding |
| | 318 | Additional chalcogen attached directly or indirectly to the diazine ring by nonionic bonding |
| | 319 | At 4- or 6-position |
| | 322 | Nitrogen attached directly to diazine ring by nonionic bonding |
| | 323 | At 2-position and at 4- or 6-position |
| | 324 | Additional hetero ring which is unsaturated |
| | 325 | Substituent on 5-position contains carbocyclic ring |
| | 326 | At 4- or 6-position |
| | 327 | Sulfur attached indirectly to the diazine ring by nonionic bonding (e.g., thiamines, etc.) |
| | 328 | Additional hetero ring which is unsaturated |
| | 329 | Carbonyl attached directly or indirectly to the diazine ring by nonionic bonding |
| | 330 | At 2-position |
| | 333 | Additional hetero ring which is unsaturated |
| | 334 | Halogen attached directly to the diazine ring by nonionic bonding |
| | 335 | Chalcogen attached indirectly to the diazine ring by nonionic bonding |
| | 336 | 1,4-diazines |
| | 337 | Phosphorus attached directly or indirectly to the diazine ring by nonionic bonding |
| | 338 | Polycyclo ring system having the diazine ring as one of the cyclos |
| | 339 | Heptacyclo ring system having the diazine ring as one of the cyclos (e.g., indanthrones, etc.) |
| | 340 | Chalcogen attached indirectly to the heptacyclo ring system by nonionic bonding |
| | 341 | Halogen, nitrogen, or carbon attached directly to the heptacyclo ring system by nonionic bonding |
| | 342 | Pentacyclo ring system having the diazine ring as one of the cyclos |
| | 343 | Tetracyclo ring system having the diazine ring as one of the cyclos (e.g., benzophenazines, etc.) |
| | 344 | Tricyclo ring system having the diazine ring as one of the cyclos |
| | 345 | Three or more ring hetero atoms in the tricyclo ring system |
| | 347 | Phenazines (including hydrogenated) |
| | 349 | Bicyclo ring system having the diazine ring as one of the cyclos |
| | 357 | Plural diazine rings |
| | 358 | Piperazines (i.e., fully hydrogenated 1,4-diazines) |
| | 359 | Additional hetero ring containing |
| | 360 | Six-membered ring consisting of one nitrogen and five carbons (e.g., pyridine, etc.) |
| | 361 | The additional six-membered hetero ring is one of the cyclos in a polycyclo ring system |
| | 364 | At least three hetero rings containing |
| | 365 | Having -C(=X)-, wherein X is chalcogen, bonded directly to ring carbon of the additional six-membered hetero ring (e.g., nicotinic acid, etc.) |
| | 366 | Five-membered hetero ring having two or more ring hetero atoms of which at least one is nitrogen |
| | 367 | Ring chalcogen in the five-membered hetero ring |
| | 368 | The five-membered hetero ring is one of the cyclos in a polycyclo ring system |
| | 369 | 1,3-oxazole ring or 1,3-thiazole ring (including hydrogenated) |
| | 370 | 1,3-diazole ring (including hydrogenated) |
| | 371 | 1,2-diazole ring (including hydrogenated) |
| | 372 | Five-membered hetero ring consisting of one nitrogen and four carbons |
| | 374 | Ring chalcogen in the additional hetero ring |
| | 375 | Polycyclo ring system having the additional hetero ring as one of the cyclos |
| | 376 | Bicyclo ring system having the additional hetero ring as one of the cyclos |
| | 378 | Plural ring chalcogens in the polycyclo ring system or the piperazine ring bonded directly to the polycyclo ring system |
| | 379 | The additional hetero ring is five-membered and unsaturated (e.g., thienyl piperazines, etc.) |
| | 380 | Polycyclo-carbocyclic ring system having at least three cyclos |
| | 382 | Nitrogen attached directly to the piperazine ring by nonionic bonding |
| | 383 | Chalcogen attached directly to piperazine ring nitrogen by nonionic bonding |
| | 384 | Chalcogen bonded directly to piperazine ring carbon |
| | 386 | Having -C(=X)-, wherein X is chalcogen, bonded directly to the piperazine ring |
| | 387 | Plural -C(=X)- groups bonded directly to the piperazine ring |
| | 389 | The -C(=X)- is part of a -C(=X)X- group, wherein the X's are the same or diverse chalcogens |
| | 390 | Halogen or acyclic nitrogen bonded directly to the -C(=X)- group |
| | 391 | Carbocyclic ring containing |
| | 392 | Phenyl or naphthyl bonded directly to ring nitrogen of the piperazine ring |
| | 393 | Acyclic nitrogen bonded directly to a -C(=X)- group, wherein X is chalcogen |
| | 394 | The other ring nitrogen has a substituent which includes chalcogen single bonded to acyclic carbon |
| | 395 | The other ring nitrogen is unsubstituted or alkyl substituted only, or salt thereof |
| | 396 | Plural carbocyclic rings bonded directly to the same acyclic carbon |
| | 398 | Chalcogen attached indirectly to the piperazine ring by nonionic bonding |
| | 399 | The chalcogen, X, is in a -C(=X)- group |
| | 401 | The chalcogen is single bonded to both acyclic carbon and hydrogen |
| | 402 | Nitrogen attached indirectly to the piperazine ring by nonionic bonding |
| | 403 | Carbocyclic ring containing |
| | 404 | N-hydrocarbyl piperazines |
| | 405 | Additional hetero ring which is unsaturated |
| | 406 | Having -C(=X)-, wherein X is chalcogen, bonded directly to the diazine ring |
| | 408 | Chalcogen bonded directly to diazine ring carbon |
| | 409 | Halogen attached directly to the diazine ring by nonionic bonding |
| | 410 | Unsubstituted or hydrocarbyl substituted only, or salt thereof |
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