The present application relates to isotopically labeled compounds of Formula I and methods of preparation and use thereof. ##STR00001##

The present application relates generally to novel aminosterol compounds, compositions comprising the same, and methods of making and using the novel aminosterol compounds and compositions.

The present invention provides a hyaluronic acid derivative having a steryl group introduced therein, wherein a ratio Mw/Mn of a weight-average molecular weight Mw to a number-average molecular weight Mn of the hyaluronic acid derivative is 1.11 or more and 10.0 or less.

The present invention provides a hyaluronic acid derivative having a steryl group introduced therein, wherein a ratio Mw/Mn of a weight-average molecular weight Mw to a number-average molecular weight Mn of the hyaluronic acid derivative is 1.11 or more and 10.0 or less.

The invention relates to compounds, compositions and polymers comprising a first component adapted to promote germination of Clostridium difficile (C. diff) and a second component which acts as an antimicrobial agent. Said compounds, compositions and polymers are useful for destroying C. diff where conventional antimicrobial agents are unsuccessful. The compositions can be formulated as coating or materials which actively destroy C. diff which come into contact with it. The germination promotion is induced by bile salts. The invention also relates to the use of such materials as a treatment for C. diff associated diseases and toxic megacolon.

The present invention discloses solvent free process for extracting cholesterol free of impurities from milk fat. The so isolated cholesterol is useful for the further preparation of vitamin D3. The present invention further provides pharmaceutical grade cholesterol from milk fat of high purity.

The present invention discloses solvent free process for extracting cholesterol free of impurities from milk fat. The so isolated cholesterol is useful for the further preparation of vitamin D3. The present invention further provides pharmaceutical grade cholesterol from milk fat of high purity.

Described herein are neuroactive steroids of the Formula (I):

##STR00001##

or a pharmaceutically acceptable salt thereof, wherein , A, R.sup.1, R.sup.2, R.sup.3a, R.sup.4a, R.sup.4b, R.sup.5, R.sup.7a, and R.sup.7b are as defined herein. Such compounds are envisioned, in certain embodiments, to behave as GABA modulators. The present invention also provides pharmaceutical compositions comprising a compound of the present invention and methods of use and treatment, e.g., such for inducing sedation and/or anesthesia.

Described herein are neuroactive steroids of the Formula (I):

##STR00001##

or a pharmaceutically acceptable salt thereof, wherein , A, R.sup.1, R.sup.2, R.sup.3a, R.sup.4a, R.sup.4b, R.sup.5, R.sup.7a, and R.sup.7b are as defined herein. Such compounds are envisioned, in certain embodiments, to behave as GABA modulators. The present invention also provides pharmaceutical compositions comprising a compound of the present invention and methods of use and treatment, e.g., such for inducing sedation and/or anesthesia.

Described herein are neuroactive steroids or a pharmaceutically acceptable salt thereof. Such compounds are envisioned, in certain embodiments, to behave as GABA modulators. Also provided are pharmaceutical compositions comprising a compound described herein and methods of use and treatment, e.g., such as for inducing sedation and/or anesthesia.