Stabilization of pyrido[3,2-a]phenoxazine compounds

Details Stabilization of pyrido[3,2-a]phenoxazine compounds Stabilization of pyrido[3,2-a]phenoxazine compounds

1976-12-02

1978-05-30

Meyers, Albert T.

Drug, bio-affecting and body treating compositions

Solid synthetic organic polymer as designated organic active...

Polymer from ethylenic monomers only

424 80, 424175, 42424853, 42424858, 424280, 544 99, A01N 900, A01N 922, C07D26500, C07D27300

Patent

active

040924106

ABSTRACT:
Stabilized solutions of 1-hydroxy-5-oxo-5H-pyrido-[3,2-a]-phenoxazine-3-carboxylic acid (I) and of 1,5-dihydroxypyrido-[3,2-a]phenoxazine-3-carboxylic acid (II) are provided. The solutions contain a stabilizer selected from the group consisting of ascorbic acid, isoascorbic acid and water-soluble salts thereof. The solutions optionally contain an auxiliary stabilizer selected from the group consisting of sodium sulfite, sodium metasulfite and N-acetyl-L-cysteine and may also contain a solubilizer.

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Chem. Abst. 77, 160,177m (1972) Morikawa.
Chem. Abst. 55, 21,494(e) (1961).
Chem. Abst. 54, 11058(h) (1960).

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