Non-hygroscopic monoammonium salts of phosphonic acids or phosphinic acids
US5543562A · kind A · utility
1Cited by
15References
5Claims
0Family size
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Key dates
| Filing date | Apr 14, 1995 |
| Grant date | Aug 6, 1996 |
| Priority date | — |
| Expiry date | Apr 14, 2015 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K38/00
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A solid, non-hygroscopic salt of the Formula (I) ##STR1## wherein R.sup.1 is hydroxy or alkyl; A is C.sub.1 to C.sub.4 alkyl-amino or an amino-alkyl group containing a primary or a secondary amino group; and B is ammonium ion or an alkyl-substituted ammonium ion, which is substantially free of a diammonium salt ##STR2##
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.