Crystalline cephalexin hydrochloride monohydrate

Details Crystalline cephalexin hydrochloride monohydrate Crystalline cephalexin hydrochloride monohydrate

1983-12-01

1986-07-15

Berch, Mark L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D50122

Patent

active

046007733

ABSTRACT:
Crystalline cephalexin hydrochloride ethanol solvate converts to crystalline cephalexin hydrochloride monohydrate upon being exposed to moisture.

REFERENCES:
patent: 3507861 (1970-04-01), Morin et al.
patent: 3655656 (1972-04-01), Van Heyningen
patent: 3985747 (1976-10-01), Kaplan et al.
patent: 4386070 (1983-05-01), DeVincentiis
Wheeler, et al., "Orally Active Esters of Cephalosporin Antibiotics," J. Med. Chem. (22) 657-661 (1979).
Page 91 of laboratory notebook of C. Ryan dated 8-7-67; plus page identifying Ryan compound and "61188".
Pfeiffer et al., Crystal Pseudopolymorphism of Cephaloglycin and Cephalexin, J. Pharm. Sci., vol. 59, No. 12, 1970 (1890-1814).
Pages 90 and 96, K. S. Yang laboratory notebook, dated Jun. 4, 1968 and Jul. 3, 1968 respectively.

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