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Class Information
Number: 540/100
Name: Organic compounds -- part of the class 532-570 series > 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 > Cyclopentanohydrophenanthrene ring system containing > Hetero ring attached directly to the cyclopentanohydrophenanthrene ring system by nonionic bonding > The hetero ring contains plural chalcogens
Description: Compounds in which the hetero ring contains at least two chalogens (i.e., oxygen, sulfur, selenium or tellurium).
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7524834 |
Sterile powders, formulations, and methods for producing the same |
Apr. 28, 2009 |
| 6262042 |
17.beta.-amino and hydroxylamino-11.beta.-arylsteroids and their derivatives having agonist or antagonist hormonal properties |
Jul. 17, 2001 |
| 6011025 |
11-(substituted phenyl)-estra-4,9-diene derivatives |
Jan. 4, 2000 |
| 5969150 |
Imidazolium cations and processes for their preparation |
Oct. 19, 1999 |
| 5792859 |
Intermediates for 20-oxo-17.alpha.,21-diol steroids |
Aug. 11, 1998 |
| 5723638 |
Process for 20-oxo-17.alpha.,21-diol steroids |
Mar. 3, 1998 |
| 5359055 |
Pregnane derivatives and processes for production thereof |
Oct. 25, 1994 |
| 5026882 |
Phosphinic acid substituted steroids as inhibitors of steroid 5.alpha.-reductase |
Jun. 25, 1991 |
| 5017568 |
Steriod 5-alpha-reductase inhibitors |
May. 21, 1991 |
| 4970205 |
Sulfonic acid substituted aromatic steroids as inhibitors of steroid 5-.alpha.-reductase |
Nov. 13, 1990 |
| 4946834 |
Phosphonic acid substituted steroids as steroid 5.alpha.-reductase inhibitors |
Aug. 7, 1990 |
| 4937237 |
Phosphinic acid substituted aromatic steroids as inhibitors of steroid 5-60 -reductase |
Jun. 26, 1990 |
| 4885117 |
Process for the preparation of (Z)-17.alpha.-halovinyl steroids |
Dec. 5, 1989 |
| 4882319 |
Phosphonic acid substituted aromatic steroids as inhibitors of steroid 5-.alpha.-reductase |
Nov. 21, 1989 |
| 4349474 |
2-Cyanosteroids |
Sep. 14, 1982 |
| 4340538 |
Process for producing 6.alpha.-fluoro-.DELTA..sup.1,4 -3-keto steroids |
Jul. 20, 1982 |
| 4136179 |
2,2-Dimethyl-19-nor-steroids |
Jan. 23, 1979 |
| 3943124 |
Chemical compounds |
Mar. 9, 1976 |
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