Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Ethanol | HCID 702 | — |
| Reactant | Trimetrexate | HCID 5583 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Product | HCID 9933036 | HCID 9933036 | — |
Reaction Steps
The crude trimetrexate base is dissolved in a mixture of DMF and water, preferably in a v/v ratio of about 10:1. The solution is initially heated to about 100° C., then a polar component such as an alcohol, preferably ethanol, is added as the solution cools to about 55-60° C. where crystallization occurs. The resulting crystals are then washed with ethanol to yield a pure trimetrexate DMF adduct. This trimetrexate-DMF adduct is itself a novel compound and is included within the scope of the invention.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US06017922 |
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| Source dataset | uspto-grants-2000_01 |
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| ORD ID | ord-99f96374e385432898c003fd8fea37fd |
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| Source note | uspto-grants-2000_01 |
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