Abstract: The present invention relates to compounds of formula (I) as defined herein, which comprise a greater proportion of deuterium to protium than naturally found in hydrogen; and compositions, including pharmaceutical compositions, comprising these compounds and optionally analogous compounds of formula (I), which are not deuterium-enriched. These compounds and compositions are of use in therapy, in particular in the treatment of psychiatric or neurological disorders. Varying the amounts of the different compounds within the compositions of the invention allows tailoring of the compositions' therapeutic effects. A particularly efficient synthetic method which enables compounds of formula (I) and related compounds of formula (I?) is also provided.

Abstract: The present invention relates to compounds of formula I, or pharmaceutically acceptable salts thereof, as well as compositions comprising such compounds. These compounds and compositions have uses in the treatment of psychiatric or neurological disorders. Compounds of formula I comprise at least one deuterium atom at the ?-position and consequently have improved oral bioavailability relative to ?-diprotic analogues.

Abstract: Syntheses of compounds of Formula III from compounds of Formula I via compounds of Formula II are described, as well as particular compounds of Formula III, or pharmaceutically acceptable salts thereof, compositions comprising such compounds, and uses thereof. For example, certain of these compounds and compositions of Formula III have uses in the treatment of psychiatric or neurological disorders.

Abstract: The present invention relates to compositions comprising N,N-dimethyltryptamine, deuterated N,N-dimethyltryptamine and/or partially deuterated N,N-dimethyltryptamine. In particular, the present invention relates to compositions comprising a combination of N,N-dimethyltryptamine and 2% or more by weight of one or more deuterated N,N-dimethyltryptamine compound selected from ?,?-dideutero-N,N-dimethyltryptamine and ?,?,?,?-tetradeutero-N,N-dimethyltryptamine. Additional and alternative compositions of the present invention comprise a combination of N,N-dimethyltryptamine and 2% or more by weight of one or more partially deuterated N,N-dimethyltryptamine compound selected from ?,?,?-trideutero-N,N-dimethyltryptamine, ?,?-dideutero-N,N-dimethyltryptamine, and ?-deutero-N,N-dimethyltryptamine.

Abstract: The present invention relates to a solid dosage form comprising two or more compounds selected from N,N-dimethyltryptamine and its deuterated analogues and pharmaceutically acceptable salts thereof, and methods of treatment (e.g., of a psychiatric disorder or a neurological disorder) comprising administering the solid dosage form to a patient in need thereof.

Abstract: The present invention relates to compositions comprising N,N-dimethyltryptamine, deuterated N,N-dimethyltryptamine and/or partially deuterated N,N-dimethyltryptamine. In particular, the present invention relates to compositions comprising a combination of N,N-dimethyltryptamine and 2% or more by weight of one or more deuterated N,N-dimethyltryptamine compound selected from ?,?-dideutero-N,N-dimethyltryptamine and ?,?,?,?-tetradeutero-N,N-dimethyltryptamine. Additional and alternative compositions of the present invention comprise a combination of N,N-dimethyltryptamine and 2% or more by weight of one or more partially deuterated N,N-dimethyltryptamine compound selected from ?,?,?-trideutero-N,N-dimethyltryptamine, ?,?-dideutero-N,N-dimethyltryptamine, and ?-deutero-N,N-dimethyltryptamine.

Abstract: Described herein are compounds of formula (I) as defined herein, which comprise a greater proportion of deuterium to protium than naturally found in hydrogen; and compositions, including pharmaceutical compositions, comprising these compounds and optionally analogous compounds of formula (I), which are not deuterium-enriched. These compounds and compositions are of use in therapy, in particular in the treatment of psychiatric or neurological disorders. Varying the amounts of the different compounds within the compositions of the invention allows tailoring of the compositions' therapeutic effects. A particularly efficient synthetic method which enables compounds of formula (I) and related compounds of formula (I?) is also provided.

Abstract: Described herein are crystalline fumarate salts having a Formula I, pharmaceutical formulations comprising the same, methods for their production, and uses thereof, Formula I comprising: wherein each R1 is independently selected from protium and deuterium; each R2 is independently selected from protium and deuterium; each R3 is independently selected from protium and deuterium; and each R4 is independently selected from protium and deuterium; and wherein the compound has a PXRD pattern comprising characteristic peaks at 19.2±0.2 and 24.7±0.2 degrees 2-theta.

Abstract: The present invention relates to compounds of formula (I) as defined herein, which comprise a greater proportion of deuterium to protium than naturally found in hydrogen; and compositions, including pharmaceutical compositions, comprising these compounds and optionally analogous compounds of formula (I), which are not deuterium-enriched. These compounds and compositions are of use in therapy, in particular in the treatment of psychiatric or neurological disorders. Varying the amounts of the different compounds within the compositions of the invention allows tailoring of the compositions' therapeutic effects. A particularly efficient synthetic method which enables compounds of formula (I) and related compounds of formula (I?) is also provided.

Abstract: Syntheses of compounds of Formula III from compounds of Formula I via compounds of Formula II are described, as well as particular compounds of Formula III, or pharmaceutically acceptable salts thereof, compositions comprising such compounds, and uses thereof. For example, certain of these compounds and compositions of Formula III have uses in the treatment of psychiatric or neurological disorders.

Abstract: Described herein are crystalline fumarate salts having a Formula I, pharmaceutical formulations comprising the same, methods for their production, and uses thereof, Formula I comprising: wherein each R1 is independently selected from protium and deuterium; each R2 is independently selected from protium and deuterium; each R3 is independently selected from protium and deuterium; and each R4 is independently selected from protium and deuterium; and wherein the compound has a PXRD pattern comprising characteristic peaks at 19.2±0.2 and 24.7±0.2 degrees 2-theta.

Abstract: The present invention relates to compounds of formula I, or pharmaceutically acceptable salts thereof, as well as compositions comprising such compounds. These compounds and compositions have uses in the treatment of psychiatric or neurological disorders. Compounds of formula I comprise at least one deuterium atom at the ?-position and consequently have improved oral bioavailability relative to ?-diprotic analogues.

Abstract: Compounds, compositions, methods, and uses are described for therapeutic deuterated N,N-dimethyltryptamine compounds (e.g., a single compound or a plurality of deuterated N,N-dimethyltryptamine compounds) such as N,N-dimethyltryptamine compounds, ?-protio, ?-deutero-N,N-dimethyltryptamine compounds, ?,?-dideutero-N,N-dimethyltryptamine compounds, and pharmaceutically acceptable salts of these compounds. The deuterated N,N-dimethyltryptamine compound may have an increased half-life compared with the half-life of undeuterated N,N-dimethyltryptamine. For example, a deuterated N,N-dimethyltryptamine compound may be used in therapy and have a Formula (I): wherein: the ratio of deuterium:protium in the compound is greater than that found naturally in hydrogen; each R1 is independently selected from H and D; R2 is selected from CH3 and CD3; R3 is selected from CH3 and CD3; each yH is independently selected from H and D, or a pharmaceutically acceptable salt thereof.

Abstract: The present invention provides novel, stable, processable and pharmaceutically acceptable salt forms of 2R,6R-hydroxynorketamine or 2S,6S-hydroxynorketamine with high aqueous solubility.

Abstract: The present invention relates to compounds of formula (I) as defined herein, which comprise a greater proportion of deuterium to protium than naturally found in hydrogen; and compositions, including pharmaceutical compositions, comprising these compounds and optionally analogous compounds of formula (I), which are not deuterium-enriched. These compounds and compositions are of use in therapy, in particular in the treatment of psychiatric or neurological disorders. Varying the amounts of the different compounds within the compositions of the invention allows tailoring of the compositions' therapeutic effects. A particularly efficient synthetic method which enables compounds of formula (I) and related compounds of formula (I?) is also provided.

Abstract: The present invention relates to compositions comprising N,N-dimethyltryptamine, deuterated N,N-dimethyltryptamine and/or partially deuterated N,N-dimethyltryptamine. In particular, the present invention relates to compositions comprising a combination of N,N-dimethyltryptamine and 2% or more by weight of one or more deuterated N,N-dimethyltryptamine compound selected from ?,?-dideutero-N,N-dimethyltryptamine and ?,?,?,?-tetradeutero-N,N-dimethyltryptamine. Additional and alternative compositions of the present invention comprise a combination of N,N-dimethyltryptamine and 2% or more by weight of one or more partially deuterated N,N-dimethyltryptamine compound selected from ?,?,?-trideutero-N,N-dimethyltryptamine, ?,?-dideutero-N,N-dimethyltryptamine, and ?-deutero-N,N-dimethyltryptamine.

Abstract: The present invention relates to compositions comprising compounds of formula I and II. These compositions have uses in the treatment of psychiatric or neurological disorders. Varying the relative amounts of the compounds of formula I and II within the compositions is expected to modulate the therapeutic effect. Related compounds of formula Ill comprise d3-monomethylamino or d6-dimethylamino groups and are useful internal standards for quantifying the amount of a target compound, such as an analogous compound comprising protio-monomethylamino or protio-dimethylamino groups. Thus, the present invention also relates to compounds of formula Ill and their uses as internal standards in assays for quantifying the amount of a target compound in a sample. A method of quantifying the amount of a target compound in a sample by adding a known amount of a compound of formula Ill to the sample is also included.

Abstract: The present invention relates to parenteral formulations, and kits and methods suitable for the preparation of such parenteral formulations. The parenteral formulations comprise a freebase of a deuterium-substituted dimethyltryptamine optionally substituted at position 4 or 5 with acetoxy or methoxy. The parenteral formulations also comprise a biocompatible excipient. Such formulations are suitable for inhalation and have uses in the treatment of psychiatric or neurological disorders. They are metabolised more slowly than their protio analogues, allowing for a longer lasting therapeutic effect.

Abstract: Described herein are compounds of formula (I) as defined herein, which comprise a greater proportion of deuterium to protium than naturally found in hydrogen; and compositions, including pharmaceutical compositions, comprising these compounds and optionally analogous compounds of formula (I), which are not deuterium-enriched. These compounds and compositions are of use in therapy, in particular in the treatment of psychiatric or neurological disorders. Varying the amounts of the different compounds within the compositions of the invention allows tailoring of the compositions' therapeutic effects. A particularly efficient synthetic method which enables compounds of formula (I) and related compounds of formula (I?) is also provided.

Abstract: Compounds, compositions, methods, and uses are described for therapeutic deuterated N,N-dimethyltryptamine compounds (e.g., a single compound or a plurality of deuterated N,N-dimethyltryptamine compounds) such as N,N-dimethyltryptamine compounds, ?-protio, ?-deutero-N,N-dimethyltryptamine compounds, ?,?-dideutero-N,N-dimethyltryptamine compounds, and pharmaceutically acceptable salts of these compounds. The deuterated N,N-dimethyltryptamine compound may have an increased half-life compared with the half-life of undeuterated N,N-dimethyltryptamine. For example, a deuterated N,N-dimethyltryptamine compound may be used in therapy and have a Formula (I): wherein: the ratio of deuterium:protium in the compound is greater than that found naturally in hydrogen; each R1 is independently selected from H and D; R2 is selected from CH3 and CD3; R3 is selected from CH3 and CD3; each yH is independently selected from H and D, or a pharmaceutically acceptable salt thereof.