Claims
- 1. A compound which is represented by the formula ##STR24## wherein R is H, an alkali metal or a group which is cleavable in aqueous alkaline medium and Z is H, alkyl having from 1 to 10 carbon atoms, benzyl, phenethyl or phenyl.
- 2. A compound as defined in claim 1 wherein Z is alkyl having from 1 to 10 carbon atoms.
- 3. A compound as defined in claim 2 wherein Z is --CH.sub.3.
- 4. A compound as defined in claim 3 wherein R is H.
- 5. A compound as defined in claim 3 wherein R is a group which is cleavable in aqueous alkaline medium.
- 6. A compound as defined in claim 1 wherein R is H.
- 7. A compound as defined in claim 1 wherein R is a group which is cleavable in aqueous alkaline medium.
- 8. A compound as defined in claim 7 wherein R is --CH.sub.2 --CH.sub.2 --SO.sub.2 --R.sub.5 wherein R.sub.5 is alkyl.
CROSS-REFERENCE TO RELATED APPLICATION
This application is a division of prior copending application Ser. No. 222,543, filed Jan. 5, 1981 now U.S. Pat. No. 4,355,092, issued Oct. 19, 1982.
US Referenced Citations (15)
Foreign Referenced Citations (5)
Number |
Date |
Country |
2427183 |
Jun 1974 |
DEX |
57-118245 |
Jul 1982 |
JPX |
1487461 |
Sep 1977 |
GBX |
1533895 |
Nov 1978 |
GBX |
P55858 |
Jul 1982 |
GBX |
Divisions (1)
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Number |
Date |
Country |
Parent |
222543 |
Jan 1981 |
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