JPS59186942A - 粗製１，４−ジヒドロキシ−２−ナフトエ酸又はその塩の精製法 - Google Patents
粗製１，４−ジヒドロキシ−２−ナフトエ酸又はその塩の精製法Info
- Publication number
- JPS59186942A JPS59186942A JP5994583A JP5994583A JPS59186942A JP S59186942 A JPS59186942 A JP S59186942A JP 5994583 A JP5994583 A JP 5994583A JP 5994583 A JP5994583 A JP 5994583A JP S59186942 A JPS59186942 A JP S59186942A
- Authority
- JP
- Japan
- Prior art keywords
- crude
- dhna
- salt
- aqueous solution
- alkali metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- VOJUXHHACRXLTD-UHFFFAOYSA-N 1,4-dihydroxy-2-naphthoic acid Chemical compound C1=CC=CC2=C(O)C(C(=O)O)=CC(O)=C21 VOJUXHHACRXLTD-UHFFFAOYSA-N 0.000 title claims abstract description 11
- 150000003839 salts Chemical class 0.000 title claims abstract description 10
- 238000000746 purification Methods 0.000 title claims description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000007864 aqueous solution Substances 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 24
- -1 alkali metal salt Chemical class 0.000 claims abstract description 17
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 15
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 11
- 150000002576 ketones Chemical class 0.000 claims abstract description 11
- 150000001339 alkali metal compounds Chemical class 0.000 claims abstract description 9
- 150000002148 esters Chemical class 0.000 claims abstract description 9
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 8
- PCILLCXFKWDRMK-UHFFFAOYSA-N naphthalene-1,4-diol Chemical compound C1=CC=C2C(O)=CC=C(O)C2=C1 PCILLCXFKWDRMK-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000013078 crystal Substances 0.000 claims abstract description 4
- 239000011541 reaction mixture Substances 0.000 claims abstract description 3
- 238000001816 cooling Methods 0.000 claims abstract 2
- 239000012535 impurity Substances 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- LNETULKMXZVUST-UHFFFAOYSA-N 1-naphthoic acid Chemical compound C1=CC=C2C(C(=O)O)=CC=CC2=C1 LNETULKMXZVUST-UHFFFAOYSA-N 0.000 claims 1
- VOJUXHHACRXLTD-UHFFFAOYSA-M 1,4-dihydroxy-2-naphthoate Chemical compound C1=CC=C2C(O)=CC(C([O-])=O)=C(O)C2=C1 VOJUXHHACRXLTD-UHFFFAOYSA-M 0.000 abstract description 44
- 108010065780 2-amino-4-hydroxy-6-hydroxymethyldihydropteridine pyrophosphokinase Proteins 0.000 abstract description 41
- 108010089355 dihydroneopterin aldolase Proteins 0.000 abstract description 41
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 239000006227 byproduct Substances 0.000 abstract description 6
- 239000002253 acid Substances 0.000 abstract description 3
- 239000000243 solution Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract description 2
- 239000012043 crude product Substances 0.000 abstract 2
- 239000003960 organic solvent Substances 0.000 description 10
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 9
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- 239000007789 gas Substances 0.000 description 8
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 125000004432 carbon atom Chemical group C* 0.000 description 5
- NTIZESTWPVYFNL-UHFFFAOYSA-N Methyl isobutyl ketone Chemical compound CC(C)CC(C)=O NTIZESTWPVYFNL-UHFFFAOYSA-N 0.000 description 4
- 238000006085 Schmidt reaction Methods 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 229910000029 sodium carbonate Inorganic materials 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- UIHCLUNTQKBZGK-UHFFFAOYSA-N Methyl isobutyl ketone Natural products CCC(C)C(C)=O UIHCLUNTQKBZGK-UHFFFAOYSA-N 0.000 description 3
- 125000001931 aliphatic group Chemical group 0.000 description 3
- PGMYKACGEOXYJE-UHFFFAOYSA-N anhydrous amyl acetate Natural products CCCCCOC(C)=O PGMYKACGEOXYJE-UHFFFAOYSA-N 0.000 description 3
- 235000014113 dietary fatty acids Nutrition 0.000 description 3
- 229930195729 fatty acid Natural products 0.000 description 3
- 239000000194 fatty acid Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 229920006395 saturated elastomer Polymers 0.000 description 3
- HXVNBWAKAOHACI-UHFFFAOYSA-N 2,4-dimethyl-3-pentanone Chemical compound CC(C)C(=O)C(C)C HXVNBWAKAOHACI-UHFFFAOYSA-N 0.000 description 2
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- NIQCNGHVCWTJSM-UHFFFAOYSA-N Dimethyl phthalate Chemical compound COC(=O)C1=CC=CC=C1C(=O)OC NIQCNGHVCWTJSM-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- 125000000217 alkyl group Chemical group 0.000 description 2
- 150000008365 aromatic ketones Chemical class 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 2
- FLKPEMZONWLCSK-UHFFFAOYSA-N diethyl phthalate Chemical compound CCOC(=O)C1=CC=CC=C1C(=O)OCC FLKPEMZONWLCSK-UHFFFAOYSA-N 0.000 description 2
- GRWZHXKQBITJKP-UHFFFAOYSA-L dithionite(2-) Chemical class [O-]S(=O)S([O-])=O GRWZHXKQBITJKP-UHFFFAOYSA-L 0.000 description 2
- MTZQAGJQAFMTAQ-UHFFFAOYSA-N ethyl benzoate Chemical compound CCOC(=O)C1=CC=CC=C1 MTZQAGJQAFMTAQ-UHFFFAOYSA-N 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- MLFHJEHSLIIPHL-UHFFFAOYSA-N isoamyl acetate Chemical compound CC(C)CCOC(C)=O MLFHJEHSLIIPHL-UHFFFAOYSA-N 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- QPJVMBTYPHYUOC-UHFFFAOYSA-N methyl benzoate Chemical compound COC(=O)C1=CC=CC=C1 QPJVMBTYPHYUOC-UHFFFAOYSA-N 0.000 description 2
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 235000011181 potassium carbonates Nutrition 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- JVBXVOWTABLYPX-UHFFFAOYSA-L sodium dithionite Chemical compound [Na+].[Na+].[O-]S(=O)S([O-])=O JVBXVOWTABLYPX-UHFFFAOYSA-L 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- VLNUTKMHYLQCQB-UHFFFAOYSA-N 2,2-dimethylpentan-3-one Chemical compound CCC(=O)C(C)(C)C VLNUTKMHYLQCQB-UHFFFAOYSA-N 0.000 description 1
- QQZOPKMRPOGIEB-UHFFFAOYSA-N 2-Oxohexane Chemical compound CCCCC(C)=O QQZOPKMRPOGIEB-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 101150047265 COR2 gene Proteins 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- JGFBQFKZKSSODQ-UHFFFAOYSA-N Isothiocyanatocyclopropane Chemical compound S=C=NC1CC1 JGFBQFKZKSSODQ-UHFFFAOYSA-N 0.000 description 1
- RJUFJBKOKNCXHH-UHFFFAOYSA-N Methyl propionate Chemical compound CCC(=O)OC RJUFJBKOKNCXHH-UHFFFAOYSA-N 0.000 description 1
- KEZDLLUSFATNAD-UHFFFAOYSA-N OS(S(O)=O)=O.S Chemical compound OS(S(O)=O)=O.S KEZDLLUSFATNAD-UHFFFAOYSA-N 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-N Propionic acid Chemical class CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 1
- 101100467189 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) QCR2 gene Proteins 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 150000001242 acetic acid derivatives Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 150000003868 ammonium compounds Chemical class 0.000 description 1
- 229940072049 amyl acetate Drugs 0.000 description 1
- 159000000032 aromatic acids Chemical class 0.000 description 1
- 150000004945 aromatic hydrocarbons Chemical class 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000004648 butanoic acid derivatives Chemical class 0.000 description 1
- 229940043232 butyl acetate Drugs 0.000 description 1
- PWLNAUNEAKQYLH-UHFFFAOYSA-N butyric acid octyl ester Natural products CCCCCCCCOC(=O)CCC PWLNAUNEAKQYLH-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 1
- 238000006473 carboxylation reaction Methods 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010908 decantation Methods 0.000 description 1
- FBSAITBEAPNWJG-UHFFFAOYSA-N dimethyl phthalate Natural products CC(=O)OC1=CC=CC=C1OC(C)=O FBSAITBEAPNWJG-UHFFFAOYSA-N 0.000 description 1
- 229960001826 dimethylphthalate Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 150000002168 ethanoic acid esters Chemical class 0.000 description 1
- 229940093499 ethyl acetate Drugs 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- NGAZZOYFWWSOGK-UHFFFAOYSA-N heptan-3-one Chemical compound CCCCC(=O)CC NGAZZOYFWWSOGK-UHFFFAOYSA-N 0.000 description 1
- MNWFXJYAOYHMED-UHFFFAOYSA-M heptanoate Chemical compound CCCCCCC([O-])=O MNWFXJYAOYHMED-UHFFFAOYSA-M 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-M hydrosulfide Chemical compound [SH-] RWSOTUBLDIXVET-UHFFFAOYSA-M 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229940117955 isoamyl acetate Drugs 0.000 description 1
- JMMWKPVZQRWMSS-UHFFFAOYSA-N isopropanol acetate Natural products CC(C)OC(C)=O JMMWKPVZQRWMSS-UHFFFAOYSA-N 0.000 description 1
- 229940011051 isopropyl acetate Drugs 0.000 description 1
- GWYFCOCPABKNJV-UHFFFAOYSA-N isovaleric acid Chemical compound CC(C)CC(O)=O GWYFCOCPABKNJV-UHFFFAOYSA-N 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 229940095102 methyl benzoate Drugs 0.000 description 1
- 229940017219 methyl propionate Drugs 0.000 description 1
- 239000012046 mixed solvent Substances 0.000 description 1
- YKYONYBAUNKHLG-UHFFFAOYSA-N n-Propyl acetate Natural products CCCOC(C)=O YKYONYBAUNKHLG-UHFFFAOYSA-N 0.000 description 1
- UUIQMZJEGPQKFD-UHFFFAOYSA-N n-butyric acid methyl ester Natural products CCCC(=O)OC UUIQMZJEGPQKFD-UHFFFAOYSA-N 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000011736 potassium bicarbonate Substances 0.000 description 1
- 229910000028 potassium bicarbonate Inorganic materials 0.000 description 1
- 235000015497 potassium bicarbonate Nutrition 0.000 description 1
- HEZHYQDYRPUXNJ-UHFFFAOYSA-L potassium dithionite Chemical compound [K+].[K+].[O-]S(=O)S([O-])=O HEZHYQDYRPUXNJ-UHFFFAOYSA-L 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- BHZRJJOHZFYXTO-UHFFFAOYSA-L potassium sulfite Chemical compound [K+].[K+].[O-]S([O-])=O BHZRJJOHZFYXTO-UHFFFAOYSA-L 0.000 description 1
- 235000019252 potassium sulphite Nutrition 0.000 description 1
- 229940090181 propyl acetate Drugs 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 1
- 150000004764 thiosulfuric acid derivatives Chemical class 0.000 description 1
- NQPDZGIKBAWPEJ-UHFFFAOYSA-N valeric acid Chemical compound CCCCC(O)=O NQPDZGIKBAWPEJ-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5994583A JPS59186942A (ja) | 1983-04-07 | 1983-04-07 | 粗製１，４−ジヒドロキシ−２−ナフトエ酸又はその塩の精製法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5994583A JPS59186942A (ja) | 1983-04-07 | 1983-04-07 | 粗製１，４−ジヒドロキシ−２−ナフトエ酸又はその塩の精製法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59186942A true JPS59186942A (ja) | 1984-10-23 |
| JPH0468301B2 JPH0468301B2 (enrdf_load_stackoverflow) | 1992-11-02 |
Family
ID=13127789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5994583A Granted JPS59186942A (ja) | 1983-04-07 | 1983-04-07 | 粗製１，４−ジヒドロキシ−２−ナフトエ酸又はその塩の精製法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59186942A (enrdf_load_stackoverflow) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0744419U (ja) * | 1993-10-05 | 1995-11-21 | 久仁夫 大塚 | 電機炊飯器用２種類炊き内がまの穴あき仕切り板 |
| CN100364518C (zh) * | 2005-12-20 | 2008-01-30 | 西安交通大学 | 1，4-萘二酚用于制备防治生殖道感染的外用杀精避孕药物用途 |
| US7374915B2 (en) | 2001-08-10 | 2008-05-20 | Meiji Dairies Corporation | Process for producing 1,4-dihydroxy-2-naphthoic acid |
| JP2010233577A (ja) * | 2003-03-26 | 2010-10-21 | Meiji Milk Prod Co Ltd | １，４−ジヒドロキシ−２−ナフトエ酸（ｄｈｎａ）を含有する飲食品の製造方法 |
| JP2022112840A (ja) * | 2021-01-22 | 2022-08-03 | 川崎化成工業株式会社 | 縮合多環芳香族骨格を有する重合禁止剤及びその組成物 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB638196A (en) * | 1948-05-08 | 1950-05-31 | Douglas James Fry | Improvements in or relating to the preparation of hydroxy aromatic carboxylic acids |
| JPS57126443A (en) * | 1981-01-29 | 1982-08-06 | Nippon Shokubai Kagaku Kogyo Co Ltd | Preparation of 1,4-dihydroxy-2-naphthoic acid |
-
1983
- 1983-04-07 JP JP5994583A patent/JPS59186942A/ja active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB638196A (en) * | 1948-05-08 | 1950-05-31 | Douglas James Fry | Improvements in or relating to the preparation of hydroxy aromatic carboxylic acids |
| JPS57126443A (en) * | 1981-01-29 | 1982-08-06 | Nippon Shokubai Kagaku Kogyo Co Ltd | Preparation of 1,4-dihydroxy-2-naphthoic acid |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0744419U (ja) * | 1993-10-05 | 1995-11-21 | 久仁夫 大塚 | 電機炊飯器用２種類炊き内がまの穴あき仕切り板 |
| US7374915B2 (en) | 2001-08-10 | 2008-05-20 | Meiji Dairies Corporation | Process for producing 1,4-dihydroxy-2-naphthoic acid |
| US7629155B2 (en) | 2001-08-10 | 2009-12-08 | Meiji Dairies Corporation | Process for producing 1,4-dihydroxy-2-naphthoic acid |
| US7834061B2 (en) | 2001-08-10 | 2010-11-16 | Meiji Dairies Corporation | Process for producing 1,4-dihydroxy-2-naphthoic acid |
| US8110607B2 (en) | 2001-08-10 | 2012-02-07 | Meiji Co., Ltd. | Process for producing 1,4-dihydroxy-2-naphthoic acid |
| JP2010233577A (ja) * | 2003-03-26 | 2010-10-21 | Meiji Milk Prod Co Ltd | １，４−ジヒドロキシ−２−ナフトエ酸（ｄｈｎａ）を含有する飲食品の製造方法 |
| US8277860B2 (en) | 2003-03-26 | 2012-10-02 | Meiji Co., Ltd. | Method of stabilizing 1,4-dihydroxy-2-naphthoic acid |
| CN100364518C (zh) * | 2005-12-20 | 2008-01-30 | 西安交通大学 | 1，4-萘二酚用于制备防治生殖道感染的外用杀精避孕药物用途 |
| JP2022112840A (ja) * | 2021-01-22 | 2022-08-03 | 川崎化成工業株式会社 | 縮合多環芳香族骨格を有する重合禁止剤及びその組成物 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0468301B2 (enrdf_load_stackoverflow) | 1992-11-02 |
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