US PATENT SUBCLASS 514 / 270
.~.~.~.~.~ Barbituric acid or derivative (including thioanalogs)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


514 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

1  DF  DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29}
183  DF  .~ Heterocyclic carbon compounds containing a hetero ring having chalcogen (i.e., O,S,Se or Te) or nitrogen as the only ring hetero atoms DOAI {16}
247  DF  .~.~ Hetero ring is six-membered consisting of two nitrogens and four carbon atoms (e.g., pyridazines, etc.) {4}
256  DF  .~.~.~ 1,3-diazines (e.g., pyrimidines, etc.) {4}
269  DF  .~.~.~.~ Pyrimidines with chalcogen bonded directly to a ring carbon of said pyrimidine moiety {3}
270.~.~.~.~.~ Barbituric acid or derivative (including thioanalogs) {1}
271  DF  .~.~.~.~.~.~> Two or more barbituric acid compounds or with an additional active ingredient or stabilizer

DEFINITION

Classification: 514/270

Barbituric acid or derivative (including thioanalogs):

(under subclass 269) Subject matter wherein the 1,3-diazine is of the structure, illustrated below, wherein X is oxygen or sulfur or the enol form thereof and R and/or R' are hydrogen, alkyl or aryl. [figure]

(1) Note. For this subclass, the three keto groups must be present on the 1,3 diazine ring.