US PATENT SUBCLASS 514 / 251
.~.~.~.~.~.~ Isoalloxazine (e.g., riboflavins, Vitamin B2, etc.)

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}
248  DF  .~.~.~ Polycyclo ring system having a 1,2- or 1,4-diazine as one of the cyclos {1}
249  DF  .~.~.~.~ 1,4-diazine as one of the cyclos {1}
250  DF  .~.~.~.~.~ At least three rings in the polycyclo ring system {1}
251.~.~.~.~.~.~ Isoalloxazine (e.g., riboflavins, Vitamin B2, etc.)

DEFINITION

Classification: 514/251

Isoalloxazine (e.g., riboflavins, vitamin B2, etc.):

(under subclass 250) Subject matter in which the 1,4, diazine is part of a radical having the following structure: [figure]

(1) Note. In a derivative, the ring structure and carbonyl moieties must remain intact. Any position on the ring may be substituted.

(2) Note. This subclass provides for a vitamin B2 (or G) composition.

(3) Note. A patent with a claim directed to a riboflavin composition will be placed here and not in subclass 23.