SI9200291A - New method for the production of aminoalkanphosphonic acids, their salts and/or esters - Google Patents
New method for the production of aminoalkanphosphonic acids, their salts and/or esters Download PDFInfo
- Publication number
- SI9200291A SI9200291A SI19929200291A SI9200291A SI9200291A SI 9200291 A SI9200291 A SI 9200291A SI 19929200291 A SI19929200291 A SI 19929200291A SI 9200291 A SI9200291 A SI 9200291A SI 9200291 A SI9200291 A SI 9200291A
- Authority
- SI
- Slovenia
- Prior art keywords
- process according
- acid
- hydrogen atom
- atom
- compound
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 28
- 239000002253 acid Substances 0.000 title claims abstract description 20
- 150000003839 salts Chemical class 0.000 title claims abstract description 10
- 150000007513 acids Chemical class 0.000 title claims abstract description 8
- 150000002148 esters Chemical class 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims abstract description 14
- 125000000217 alkyl group Chemical group 0.000 claims abstract description 9
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 6
- 150000001342 alkaline earth metals Chemical group 0.000 claims abstract description 4
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 3
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 3
- 125000003710 aryl alkyl group Chemical group 0.000 claims abstract description 3
- 125000003118 aryl group Chemical group 0.000 claims abstract description 3
- 125000000753 cycloalkyl group Chemical group 0.000 claims abstract description 3
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 3
- 150000002367 halogens Chemical class 0.000 claims abstract description 3
- 125000005842 heteroatom Chemical group 0.000 claims abstract description 3
- 150000005690 diesters Chemical class 0.000 claims description 25
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical group CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 15
- 238000006243 chemical reaction Methods 0.000 claims description 14
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 11
- NBBJYMSMWIIQGU-UHFFFAOYSA-N Propionic aldehyde Chemical compound CCC=O NBBJYMSMWIIQGU-UHFFFAOYSA-N 0.000 claims description 10
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 9
- 150000001875 compounds Chemical class 0.000 claims description 9
- -1 or in protected form Chemical class 0.000 claims description 9
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 claims description 8
- 238000002360 preparation method Methods 0.000 claims description 7
- 150000001412 amines Chemical class 0.000 claims description 5
- 239000003960 organic solvent Substances 0.000 claims description 5
- 125000004429 atom Chemical group 0.000 claims description 4
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 3
- 229910052700 potassium Inorganic materials 0.000 claims description 3
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 claims description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 2
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims description 2
- 150000001299 aldehydes Chemical class 0.000 claims description 2
- 239000002585 base Substances 0.000 claims description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims description 2
- 150000002373 hemiacetals Chemical class 0.000 claims description 2
- 150000001728 carbonyl compounds Chemical class 0.000 claims 4
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical group [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 1
- 125000000113 cyclohexyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])C1([H])[H] 0.000 claims 1
- WVIIMZNLDWSIRH-UHFFFAOYSA-N cyclohexylcyclohexane Chemical compound C1CCCCC1C1CCCCC1 WVIIMZNLDWSIRH-UHFFFAOYSA-N 0.000 claims 1
- 125000004177 diethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 claims 1
- 150000007529 inorganic bases Chemical class 0.000 claims 1
- 150000002576 ketones Chemical class 0.000 claims 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims 1
- 150000007530 organic bases Chemical class 0.000 claims 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims 1
- 150000002466 imines Chemical class 0.000 description 13
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 12
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 12
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 10
- CZHYKKAKFWLGJO-UHFFFAOYSA-N dimethyl phosphite Chemical compound COP([O-])OC CZHYKKAKFWLGJO-UHFFFAOYSA-N 0.000 description 8
- 230000007062 hydrolysis Effects 0.000 description 8
- 238000006460 hydrolysis reaction Methods 0.000 description 8
- 125000004356 hydroxy functional group Chemical group O* 0.000 description 8
- 239000012535 impurity Substances 0.000 description 8
- LXCYSACZTOKNNS-UHFFFAOYSA-N diethoxy(oxo)phosphanium Chemical compound CCO[P+](=O)OCC LXCYSACZTOKNNS-UHFFFAOYSA-N 0.000 description 7
- 239000012074 organic phase Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000004821 distillation Methods 0.000 description 5
- 239000001294 propane Substances 0.000 description 5
- 239000011541 reaction mixture Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000008346 aqueous phase Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical compound OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000004817 gas chromatography Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- CXOWYJMDMMMMJO-UHFFFAOYSA-N 2,2-dimethylpentane Chemical compound CCCC(C)(C)C CXOWYJMDMMMMJO-UHFFFAOYSA-N 0.000 description 2
- GQWWGRUJOCIUKI-UHFFFAOYSA-N 2-[3-(2-methyl-1-oxopyrrolo[1,2-a]pyrazin-3-yl)propyl]guanidine Chemical compound O=C1N(C)C(CCCN=C(N)N)=CN2C=CC=C21 GQWWGRUJOCIUKI-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000003929 acidic solution Substances 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 239000000417 fungicide Substances 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 150000003141 primary amines Chemical class 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- DELJNDWGTWHHFA-UHFFFAOYSA-N 1-azaniumylpropyl(hydroxy)phosphinate Chemical compound CCC(N)P(O)(O)=O DELJNDWGTWHHFA-UHFFFAOYSA-N 0.000 description 1
- PCQKMDBZOIYAKY-UHFFFAOYSA-N 2,2-dimethylpentan-3-amine Chemical compound CCC(N)C(C)(C)C PCQKMDBZOIYAKY-UHFFFAOYSA-N 0.000 description 1
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 1
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 description 1
- LORUMFRUUVBIJT-UHFFFAOYSA-N P(O)(O)=O.NCCC Chemical compound P(O)(O)=O.NCCC LORUMFRUUVBIJT-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 238000005903 acid hydrolysis reaction Methods 0.000 description 1
- 238000010533 azeotropic distillation Methods 0.000 description 1
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000037213 diet Effects 0.000 description 1
- VFJRKWVRBRAQIU-UHFFFAOYSA-L disodium;toluene;carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O.CC1=CC=CC=C1 VFJRKWVRBRAQIU-UHFFFAOYSA-L 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 229940087646 methanolamine Drugs 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 150000003335 secondary amines Chemical class 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
- C07F9/3804—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)] not used, see subgroups
- C07F9/3808—Acyclic saturated acids which can have further substituents on alkyl
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/38—Phosphonic acids [RP(=O)(OH)2]; Thiophosphonic acids ; [RP(=X1)(X2H)2(X1, X2 are each independently O, S or Se)]
- C07F9/40—Esters thereof
- C07F9/4003—Esters thereof the acid moiety containing a substituent or a structure which is considered as characteristic
- C07F9/4006—Esters of acyclic acids which can have further substituents on alkyl
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Preparation Of Compounds By Using Micro-Organisms (AREA)
- Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9113717A FR2683222B1 (fr) | 1991-10-31 | 1991-10-31 | Procede de production d'acides, de sels et/ou esters aminoalcanephosphoniques. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SI9200291A true SI9200291A (en) | 1993-06-30 |
Family
ID=9418696
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SI19929200291A SI9200291A (en) | 1991-10-31 | 1992-10-30 | New method for the production of aminoalkanphosphonic acids, their salts and/or esters |
Country Status (22)
| Country | Link |
|---|---|
| EP (1) | EP0540437B1 (zh) |
| JP (1) | JPH05222071A (zh) |
| KR (1) | KR930007959A (zh) |
| CN (1) | CN1072932A (zh) |
| AT (1) | ATE167678T1 (zh) |
| AU (1) | AU648936B2 (zh) |
| BR (1) | BR9204284A (zh) |
| CA (1) | CA2081726A1 (zh) |
| CZ (1) | CZ326092A3 (zh) |
| DE (1) | DE69226009T2 (zh) |
| DK (1) | DK0540437T3 (zh) |
| ES (1) | ES2117658T3 (zh) |
| FI (1) | FI924944A (zh) |
| FR (1) | FR2683222B1 (zh) |
| HR (1) | HRP921124A2 (zh) |
| HU (1) | HUT63169A (zh) |
| IL (1) | IL103596A0 (zh) |
| MX (1) | MX9206284A (zh) |
| NZ (1) | NZ244927A (zh) |
| PL (1) | PL296410A1 (zh) |
| SI (1) | SI9200291A (zh) |
| ZA (1) | ZA928234B (zh) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6084123A (en) * | 1995-09-26 | 2000-07-04 | Hokko Chemical Industry Co., Ltd. | Process for the preparation of optically active 1-aminophosphonic acid derivatives and novel phosphonate compounds |
| CN102942590B (zh) * | 2012-11-01 | 2015-12-16 | 武汉三聚生物技术有限公司 | α-（金刚烷）氨基膦酸及其制备方法和用途 |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2635112A (en) * | 1949-07-28 | 1953-04-14 | Research Corp | Process for producing aminomethylphosphonic acid compounds |
| GB1261613A (en) * | 1968-06-04 | 1972-01-26 | Stauffer Chemical Co | Improved method for preparing aminoalkylphosphonates |
| US4579956A (en) * | 1974-10-10 | 1986-04-01 | Petrolite Corporation | Amino-phosphonates |
| US4235809A (en) * | 1976-08-12 | 1980-11-25 | Petrolite Corporation | α-Amino phosphonic acids |
| DE2741504C3 (de) * | 1977-09-15 | 1981-11-19 | Joh. A. Benckiser Gmbh, 6700 Ludwigshafen | Verfahren zur Herstellung von Aminoalkylenphosphonsäuren |
| SE455259B (sv) * | 1984-01-30 | 1988-07-04 | Kenogard Ab | Anvendning av vissa aminoalkanfosfonsyror for bekempning av svampsjukdomar hos vexter |
| DE3612192A1 (de) * | 1986-04-11 | 1987-10-22 | Hoechst Ag | Verfahren zur herstellung von (alpha)-aminoalkylphosphonsaeuren |
| DE4026028A1 (de) * | 1990-08-17 | 1992-02-20 | Hoechst Ag | Verfahren zur herstellung von aminomethanphosphonsaeure und aminomethyl-phosphinsaeuren aus n-hydroxymethyl-amiden |
| DE4026027A1 (de) * | 1990-08-17 | 1992-02-20 | Hoechst Ag | Verfahren zur herstellung von aminomethanphosphonsaeure und aminomethyl-phosphinsaeuren |
-
1991
- 1991-10-31 FR FR9113717A patent/FR2683222B1/fr not_active Expired - Fee Related
-
1992
- 1992-10-23 ZA ZA928234A patent/ZA928234B/xx unknown
- 1992-10-24 KR KR1019920020339A patent/KR930007959A/ko not_active Application Discontinuation
- 1992-10-27 AU AU27334/92A patent/AU648936B2/en not_active Ceased
- 1992-10-28 HR HR921124A patent/HRP921124A2/hr not_active Application Discontinuation
- 1992-10-29 CA CA002081726A patent/CA2081726A1/fr not_active Abandoned
- 1992-10-29 NZ NZ244927A patent/NZ244927A/en unknown
- 1992-10-29 BR BR929204284A patent/BR9204284A/pt not_active Application Discontinuation
- 1992-10-29 CZ CS923260A patent/CZ326092A3/cs unknown
- 1992-10-29 PL PL29641092A patent/PL296410A1/xx unknown
- 1992-10-29 IL IL103596A patent/IL103596A0/xx unknown
- 1992-10-30 DK DK92420391T patent/DK0540437T3/da active
- 1992-10-30 ES ES92420391T patent/ES2117658T3/es not_active Expired - Lifetime
- 1992-10-30 DE DE69226009T patent/DE69226009T2/de not_active Expired - Lifetime
- 1992-10-30 JP JP4292968A patent/JPH05222071A/ja active Pending
- 1992-10-30 EP EP92420391A patent/EP0540437B1/fr not_active Expired - Lifetime
- 1992-10-30 FI FI924944A patent/FI924944A/fi not_active Application Discontinuation
- 1992-10-30 SI SI19929200291A patent/SI9200291A/sl unknown
- 1992-10-30 AT AT92420391T patent/ATE167678T1/de active
- 1992-10-30 MX MX9206284A patent/MX9206284A/es unknown
- 1992-10-30 CN CN92113794A patent/CN1072932A/zh active Pending
- 1992-10-30 HU HU9203432A patent/HUT63169A/hu unknown
Also Published As
| Publication number | Publication date |
|---|---|
| EP0540437A1 (fr) | 1993-05-05 |
| DK0540437T3 (da) | 1998-10-26 |
| ZA928234B (en) | 1993-05-06 |
| NZ244927A (en) | 1994-12-22 |
| FI924944A (fi) | 1993-05-01 |
| DE69226009T2 (de) | 1998-11-05 |
| FR2683222A1 (fr) | 1993-05-07 |
| IL103596A0 (en) | 1993-03-15 |
| JPH05222071A (ja) | 1993-08-31 |
| HUT63169A (en) | 1993-07-28 |
| MX9206284A (es) | 1993-04-01 |
| BR9204284A (pt) | 1993-06-01 |
| AU2733492A (en) | 1993-05-06 |
| HRP921124A2 (en) | 1994-12-31 |
| HU9203432D0 (en) | 1993-03-01 |
| PL296410A1 (en) | 1993-12-27 |
| AU648936B2 (en) | 1994-05-05 |
| FR2683222B1 (fr) | 1995-05-19 |
| CN1072932A (zh) | 1993-06-09 |
| CA2081726A1 (fr) | 1993-05-01 |
| ATE167678T1 (de) | 1998-07-15 |
| CZ326092A3 (en) | 1993-05-12 |
| DE69226009D1 (de) | 1998-07-30 |
| EP0540437B1 (fr) | 1998-06-24 |
| ES2117658T3 (es) | 1998-08-16 |
| KR930007959A (ko) | 1993-05-20 |
| FI924944A0 (fi) | 1992-10-30 |
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