US PATENT SUBCLASS 514 / 167
.~ 9,10-seco- cyclopentanohydrophenanthrene ring system (e.g., vitamin D, etc.) DOAI

Current as of: June, 1999
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514 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

1  DF  DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29}
167.~ 9,10-seco- cyclopentanohydrophenanthrene ring system (e.g., vitamin D, etc.) DOAI {1}
168  DF  .~.~> With a vitamin type active ingredient

DEFINITION

Classification: 514/167

9,10-seco cyclopentanohydrophenanthrene ring system (e.g., vitamin D, etc.) DOAI:

Subject matter under subclass wherein the organic active ingredient contains a 9, 10-seco-cyclopentanohydrophenanthrene nucleus, i.e., [figure]

(1) Note. Such terms as "activated ergosterol", vitamin D, ergocalciferol, cholecalciferol and antirachitic vitamin will suffice for classification of an active ingredient in this subclass.