Abstract: The present invention relates a method of monitoring an automated radiosynthesizer during a run and the radiosynthesizer having a number of individual activity detectors operably associated therewith. The method comprises the steps of recording S10 activity data from each activity detector; accessing S20 historic data from a data storage; detecting S30 precursor of yield drop in the recorded activity data based on the historic data; predicting (S40 yield when synthesizing a tracer with the radiosynthesizer based on the detected precursor of yield drop; and initiating S50 actions related to a level of predicted yield.

Abstract: The invention relates to a method of preparing an [18F]radio-labelled compound, wherein the water content is controlled. Controlling the water content and the origin of the water within the reaction process has a significant effect on both the yield and the purity of the product of the radiolabelling process.

Abstract: The present invention provides a method for the synthesis of an injectable composition comprising a [18F]-labelled pyridaben derivative that is amenable to automation. In particular, the method of the present invention comprises a method of purification carried out by means of solid phase extraction (SPE) alone.

Abstract: The present invention provides a method for the synthesis of an injectable composition comprising a [18F]-labelled pyridaben derivative that is amenable to automation. In particular, the method of the present invention comprises a method of purification carried out by means of solid phase extraction (SPE) alone.

Abstract: The invention relates to a method of preparing an [18F] radio-labelled compound, wherein the water content is controlled. Controlling the water content and the origin of the water within the reaction process has a significant effect on both the yield and the purity of the product of the radio-labelling process.

Abstract: Provided is a method of preparing an aqueous ascorbic acid solution having a pH of 2.0 to 4.0, the method comprising: providing an initial aqueous solution of ascorbic acid and a base, wherein the initial solution has a pH of 5.0 to 8.0; and combining the initial solution with a second acid to obtain an ascorbic acid solution having a pH of 2.0 to 4.0. Also provided is the use of an aqueous ascorbic acid solution having a pH of 2.0 to 4.0 prepared by a described method as a radiostabiliser of a radio-labelled compound.

Abstract: The present invention provides a method for the synthesis of an injectable composition comprising a [18F]-labelled pyridaben derivative that is advantageous over prior methods. In particular, the method of the present invention comprises a method of radiosynthesis that permits a more facile purification using solid phase extraction (SPE).

Abstract: The present invention provides a method for the synthesis of an injectable composition comprising a [18F]-labelled pyridaben derivative that is advantageous over prior methods. In particular, the method of the present invention comprises a method of radiosynthesis that permits a more facile purification using solid phase extraction (SPE).

Abstract: An interchangeable eyeglass lens system allows for the placement and easy removal of lenses to a pair of glasses to create various shades and colors of sunglasses. The glasses may include a set of prescription lenses permanently fixed to the frame and a second set of lenses that slide into a groove in the frame. The present invention is further a method of interchanging the tinted lenses within the glasses.

Abstract: The present invention provides a method for the synthesis of an injectable composition comprising a [18F]-labelled pyridaben derivative that is amenable to automation. In particular, the method of the present invention comprises a method of purification carried out by means of solid phase extraction (SPE) alone.

Abstract: The present invention relates a method of monitoring an automated radiosynthesizer during a run and the radiosynthesizer having a number of individual activity detectors operably associated therewith. The method comprises the steps of recording S10 activity data from each activity detector; accessing S20 historic data from a data storage; detecting S30 precursor of yield drop in the recorded activity data based on the historic data; predicting (S40 yield when synthesizing a tracer with the radiosynthesizer based on the detected precursor of yield drop; and initiating S50 actions related to a level of predicted yield.

Abstract: The present invention provides a method for the synthesis of an injectable composition comprising a [18F]-labelled pyridaben derivative that is advantageous over prior methods. In particular, the method of the present invention comprises a method of radiosynthesis that permits a more facile purification using solid phase extraction (SPE).

Abstract: The present invention relates to an improved [18F]labelled synthon composition, wherein the non-radioactive impurities in said composition have been found to be more straightforward to remove than with known compositions comprising said [18F]labelled synthon. The resultant purified [18F]label led synthon therefore can be used in the production of a positron emission tomography (PET) tracer having improved properties for in vivo imaging. The invention also includes methods of imaging and/or diagnosis using the radiopharmaceutical compositions described.

Abstract: The invention relates to methods for processing [18F]-fluoride target water using a solid-support bound Cryptand of formula (I) and to apparatus for performing such methods. The resultant [18F]-fluoride is useful for preparation of radiopharmaceuticals by nucleophilic fluorination, specifically for use in Positron Emission Tomography (PET).

Abstract: The invention relates to methods for processing [18F]-fluoride target water using a solid-support bound Cryptand of formula (I) and to apparatus for performing such methods. The resultant [18F]-fluoride is useful for preparation of radiopharmaceuticals by nucleophilic fluorination, specifically for use in Positron Emission Tomography (PET).

Abstract: The present invention provides a method to obtain radiofluorinated compounds useful for in vivo imaging GABAA receptors. The method of the invention is high-yielding and may conveniently be carried out on an automated synthesizer such as Fastlab™. A further aspect of the invention is a cassette suitable for carrying out the automated method of synthesis of the invention. Novel precursor compounds useful in the method of the invention are also provided, as are a number of novel compounds obtained by the method of the invention.

Abstract: In view of the needs of the art, the present invention provides a reaction vessel having two distinct compartments, for separating solid-supported reagents. The present invention also provides a method to perform two step radiochemistry procedures in one reactor in a clean and 10 efficient manner. An example of the chemistry that could benefit from this approach is ‘click’ radiochemistry. The present invention provides a method to form the synthon, and react it with an alkyne without the need to perform a purification step.

Abstract: A stacked reactor vessel provides two separate reaction vessel compartments for performing chemical reactions and is particularly suited to multi-step chemical reactions and for incorporation into a cassette for automated operation.

Abstract: A connector cap for a reagent bottle which can be pre-attached to a fully assembled synthesis cassette allows greater control in the assembly of the cassette and simpler operation for the end user. The connector cap may be incorporated onto reagent bottle or on vials to be used with automated synthesis cassettes.