Storage stable perfusion solution for dihydropteridinones
Disclosed are storage stable aqueous infusible or injectable solutions containing an active substance of general formula (I) wherein the groups L, R 1 , R 2 , R 3 , R 4 and R 5 have the meanings given in the claims and in the specification, and an amount of a physiologically acceptable acid or mixture of acids sufficient to dissolve the active substance and act as a stabilizer, optionally together with other formulating excipients suitable for parenteral administration, and a process for preparing the infusible or injectable solutions according to the invention.
1. A Storage stable aqueous infusible or injectable solution containing an active substance of general formula (I)
Con-
fig.
R 1
Ex.
R 1
R 2
or R 2
R 3
R 4
L n —R 5 m
110
H
R
46
H
R
whereby the abbreviations X 1 , X 2 , X 3 , X 4 and X 5 used in the Table in each case denote a link to a position in the general formula listed in the Table instead of the corresponding groups R 1 , R 2 , R 3 , R 4 and L-R 5
or the tautomers, racemates, enantiomers or diastereomers and an amount of a physiologically acceptable acid or mixture of acids wherein the solution has a pH of 2.4 to 5.3 optionally together with other formulating excipients suitable for parenteral administration.
2. The solution according to claim 1 wherein the active substance of general formula (I)
is
Con-
fig.
R 1
Ex.
R 1
R 2
or R 2
R 3
R 4
L n —R 5 m
110
H
R
3. The solution according to claim 2 , wherein the content of dissolved active substance is 0.1 mg to 10.0 mg in 1 ml of infusible or injectable solution.
4. The solution according to claim 3 , wherein one or more acids used as storage and dilution stabilisers are selected from hydrochloric acid, acetic acid, hydroxyacetic acid, methanesulphonic acid, ethanesulphonic acid, phosphoric acid, nitric acid, sulphuric acid, citric acid, tartaric acid, fumaric acid, succinic acid, glutaric acid, adipic acid, propionic acid, ascorbic acid, maleic acid, malic acid, glutamic acid, gluconic acid, glucuronic acid, galacturonic acid and lactic acid.
5. The solution according to claim 4 , wherein it contains one or more other formulating excipients selected from among complexing agents, light protecting agents, crystallisation inhibitors, thickeners, isotonic agents, antioxidants and euhydration agents.
6. The solution according to claim 5 , wherein the osmolality of the infusible or injectable solutions is 200-600 mOsmol/kg.
7. The solution according to claim 6 , wherein it contains 1.25 to 3.0 mol hydrochloric acid per mol active substance, based on 100 ml infusible or injectable solution 0.75 to 1.2 g NaCl, and have an osmolality of 260 to 350 mOsmol/kg and a pH of 3.5 to 5.0.
8. A lyophilisate, concentrate or suspension, wherein by the addition of water they yield an aqueous infusible or injectable solution according to claim 7 .
9. The solution according to claim 5 wherein the complexing agent is EDTA.
10. A glass container or flexible plastic container suitable for parenteral preparations, containing infusible or injectable solutions according to claim 1 .
11. The solution according to claim 1 wherein the active substance of general formula (I)
is
Con-
fig.
R 1
Ex.
R 1
R 2
or R 2
R 3
R 4
L n —R 5 m
46
H
R
12. The solution according to claim 11 , wherein the content of dissolved active substance is 0.1 mg to 10.0 mg in 1 ml of infusible or injectable solution.
13. The solution according to claim 12 , wherein one or more acids used as storage and dilution stabilisers are selected from hydrochloric acid, acetic acid, hydroxyacetic acid, methanesulphonic acid, ethanesulphonic acid, phosphoric acid, nitric acid, sulphuric acid, citric acid, tartaric acid, fumaric acid, succinic acid, glutaric acid, adipic acid, propionic acid, ascorbic acid, maleic acid, malic acid, glutamic acid, gluconic acid, glucuronic acid, galacturonic acid and lactic acid.
14. The solution according to claim 13 , wherein it contains one or more other formulating excipients selected from among complexing agents, light protecting agents, crystallisation inhibitors, thickeners, isotonic agents, antioxidants and euhydration agents.
15. The solution according to claim 14 , wherein the osmolality of the infusible or injectable solutions is 200-600 mOsmol/kg.
16. The solution according to claim 15 , wherein it contains 1.25 to 3.0 mol hydrochloric acid per mol active substance, based on 100 ml infusible or injectable solution 0.75 to 1.2 g NaCl, and have an osmolality of 260 to 350 mOsmol/kg and a pH of 3.5 to 5.0.
17. A lyophilisate, concentrate or suspension, wherein by the addition of water they yield an aqueous infusible or injectable solution according to claim 16 .
18. The solution according to claim 14 wherein the complexing agent is EDTA.