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...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.

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Class 552/649 - The cyclopentanohydrophenanthrene ring system is fully saturated (e.g., 17 alpha-alkyl-17 beta-hydroxyestran-3-ones, etc.)


Subclass of Class 552 - Organic compounds -- part of the class 532-570 series
Definition: Compounds wherein there are no double bonds between any
No. of patents: 11
Last issue date: 05/09/2006


NumberTitleIssue Date
7041839Steroidal antiestrogens and antiandrogens and uses thereof
The present invention comprises the design, synthesis and development of a new class of chemotherapeutic agents for prophylactic and therapeutic treatments in a mammal, particularly a human, believed to be at risk of suffering from a hormone-responsive disorde. In a...
05/09/2006
6989378Testosterone derivative
The invention is the novel androgen (7α,17β)-7-methyl-17-[(1-oxoundecyl)oxy]estr-4en-3one (MENT undecanoate). This compound distinguishes favourably from other testosterone derivatives in that it has a good solubility in oily media. It particularly exhibits a good...
01/24/2006
6677329Non-aromatic estrogenic steroids with a hydrocarbon substituent in position 11
Disclosed are novel, selective estrogens type having a steroid skeleton with a non-aromatic A-ring and a free or capped hydroxyl group at carbon atom No. 3. The estrogens satisfy general formula (I), in which R1 is H, (C1 -C3
01/13/2004
5925630Neuroactive steroids of the androstane and pregnane series
The invention relates to 3଱-hydroxy, 17-(un)substituted derivatives of the androstane series and 3଱-hydroxy, 21-substituted derivatives of the pregnane series. These derivatives are capable of acting at a recently identified site on the GRC, t...
07/20/1999
5723455Antiandrogenic agents and related pharmaceutical compositions and methods of use
Novel antiandrogenic agents are provided. An exemplary group of compounds has the structural formula (I) ##STR1## wherein R1 through R10, a and b are as defined herein. Pharmaceutical compositions and methods for using the compo...
03/03/1998
4978658Compositions containing 5଱-dihydro-19-norethisterone and derivatives thereof for in vivo inhibition of aromatase
A composition for in vivo inhibition of aromatase in a mammal, which comprises an in vivo inhibitory amount of a compound having the following general formula: ##STR1## wherein R1 is hydrogen or C1-4 acyl, in combination with as...
12/18/1990
4885117Process for the preparation of (Z)-17଱-halovinyl steroids
(Z)-17଱-halovinyl steroids of general Formula I ##STR1## wherein . . . . is a single bond or a double bond, V is a carbon-to-carbon bond or a methylene group, R1 is a hydrogen atom or a methyl group, X is a chlorine atom, a bromine atom or an ...
12/05/1989
4307087Branched chain and cycloaliphatic esters of the androstane and oestrane series and pharmaceutical compositions containing same
There are disclosed branched chain and cycloaliphatic esters of steroids having the formula: ##STR1## where R is H or CH3 ; R1 is H or CH3 ; R2 is H or CH3 ; R3 is H, OH, CH3 or ...
12/22/1981
4307086Branched chain and cycloaliphatic esters of the androstane and destrane series and pharmaceutical compositions containing same
There are disclosed branched chain and cycloaliphatic esters of steroids having the formula: ##STR1## where R is H or CH3 ; R1 is H or CH3 ; R2 is H or CH3 ; R3 is H, OH, CH3 or ...
12/22/1981
4212864Branched chain and cycloaliphatic esters of the androstane and oestrane series and pharmaceutical compositions containing same
There are disclosed branched chain and cycloaliphatic esters of steroids having the formula: ##STR1## or the 5଱H analog thereof, where R is H or CH3 ; R1 is H or CH3 ; R2 is H or CH3 ; R3
07/15/1980
4002746Synthesis of gon-4-enes
1. A therapeutic composition having progestational activity comprising as active ingredient a 17-aliphatic carboxylic acid ester of 17଱-ethynyl-18-methyl-19-nortestosterone and a pharmaceutical carrier for said compound....
01/11/1977
 
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