| Title:  HPA-23 CAS Registry Number:  89899-81-0 CAS Name:  Hexaoctacontaoxononaantimonateheneicosatungstate(19-) heptadecaammonium disodium Additional Names:  ammonium 5-tungsto-2-antimonate;  5-tungsto-2-antimonate;  21-tungsto-9-antimonate Molecular Formula:  H68Na2N17O86Sb9W21 Molecular Weight:  6685.06 Percent Composition:  H 1.03%, Na 0.69%, N 3.56%, O 20.58%, Sb 16.39%, W 57.75% Line Formula:  (NH4)17Na(NaSb9W21O86) Literature References:  One of the condensed mineral heteropolyanions, also called polyoxotungstates.  Synthesis:  M. Michelon, G. Hervé, C.R. Seances Acad. Sci. Ser. C 274, 209 (1972); M. Michelon et al., J. Inorg. Nucl. Chem. 42, 1583 (1980).  Crystal structure:  J. Fischer et al., J. Am. Chem. Soc. 98, 3050 (1976).  Laser Raman studies of intracellular localization:  C. Cibert, C. Jasmin, Biochem. Biophys. Res. Commun. 108, 1424 (1982).  Antiviral activity in mice:  C. Jasmin et al., J. Natl. Cancer Inst. 53, 469 (1974); G. H. Werner et al., J. Gen. Virol. 31, 59 (1976).  In vitro inhibition of rabies virus:  H. Tsiang et al., J. Gen. Virol. 40, 665 (1978).  Effects in scrapie model systems:  R. H. Kimberlin, C. A. Walker, Lancet 2, 591 (1979); eidem, Arch. Virol. 78, 9 (1983).  Structure-activity study:  M. Hervé et al., Biochem. Biophys. Res. Commun. 116, 222 (1983).  Clinical evaluation in AIDS:  W. Rozenbaum et al., Lancet 1, 450 (1985); B. L. Moskovitz, Antimicrob. Agents Chemother. 32, 1300 (1988). Properties:  Crystals from water.  Solution has pH near 6.7, and is stable around neutrality.  LD50 i.p. in mice:  750 mg/kg (Werner). Toxicity data:  LD50 i.p. in mice:  750 mg/kg (Werner) NOTE:  Formerly known as ammonium antimony tungsten oxide.  |