CN101531660A - Industrialization production process of entecavir-monohydrate - Google Patents
Industrialization production process of entecavir-monohydrate Download PDFInfo
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- CN101531660A CN101531660A CN200910116532A CN200910116532A CN101531660A CN 101531660 A CN101531660 A CN 101531660A CN 200910116532 A CN200910116532 A CN 200910116532A CN 200910116532 A CN200910116532 A CN 200910116532A CN 101531660 A CN101531660 A CN 101531660A
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- Prior art keywords
- ent
- entecavir
- preparation
- reaction
- add
- 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
- 238000004519 manufacturing process Methods 0.000 title abstract description 15
- YXPVEXCTPGULBZ-WQYNNSOESA-N entecavir hydrate Chemical compound O.C1=NC=2C(=O)NC(N)=NC=2N1[C@H]1C[C@H](O)[C@@H](CO)C1=C YXPVEXCTPGULBZ-WQYNNSOESA-N 0.000 title abstract description 11
- 229950010614 entecavir monohydrate Drugs 0.000 title abstract 2
- 238000006243 chemical reaction Methods 0.000 claims abstract description 36
- 238000002360 preparation method Methods 0.000 claims abstract description 28
- 238000000034 method Methods 0.000 claims abstract description 22
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000007818 Grignard reagent Substances 0.000 claims abstract description 5
- 150000004795 grignard reagents Chemical class 0.000 claims abstract description 5
- 239000003054 catalyst Substances 0.000 claims abstract description 4
- GNEPOXWQWFSSOU-UHFFFAOYSA-N dichloro-methyl-phenylsilane Chemical compound C[Si](Cl)(Cl)C1=CC=CC=C1 GNEPOXWQWFSSOU-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000009471 action Effects 0.000 claims abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 28
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 24
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical group C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- 238000005516 engineering process Methods 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 10
- 239000005046 Chlorosilane Substances 0.000 claims description 7
- KOPOQZFJUQMUML-UHFFFAOYSA-N chlorosilane Chemical compound Cl[SiH3] KOPOQZFJUQMUML-UHFFFAOYSA-N 0.000 claims description 7
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 claims description 7
- 238000005406 washing Methods 0.000 claims description 7
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims description 6
- NUUNDIOOYFEMQN-UHFFFAOYSA-N cyclopenta-1,3-diene;sodium Chemical compound [Na].C1C=CC=C1 NUUNDIOOYFEMQN-UHFFFAOYSA-N 0.000 claims description 6
- 238000003786 synthesis reaction Methods 0.000 claims description 5
- RYYIULNRIVUMTQ-UHFFFAOYSA-N 6-chloroguanine Chemical compound NC1=NC(Cl)=C2N=CNC2=N1 RYYIULNRIVUMTQ-UHFFFAOYSA-N 0.000 claims description 4
- BZLVMXJERCGZMT-UHFFFAOYSA-N Methyl tert-butyl ether Chemical compound COC(C)(C)C BZLVMXJERCGZMT-UHFFFAOYSA-N 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 3
- DOBRDRYODQBAMW-UHFFFAOYSA-N copper(i) cyanide Chemical compound [Cu+].N#[C-] DOBRDRYODQBAMW-UHFFFAOYSA-N 0.000 claims description 3
- PQVSTLUFSYVLTO-UHFFFAOYSA-N ethyl n-ethoxycarbonylcarbamate Chemical compound CCOC(=O)NC(=O)OCC PQVSTLUFSYVLTO-UHFFFAOYSA-N 0.000 claims description 3
- GLXDVVHUTZTUQK-UHFFFAOYSA-M lithium hydroxide monohydrate Substances [Li+].O.[OH-] GLXDVVHUTZTUQK-UHFFFAOYSA-M 0.000 claims description 3
- 229940040692 lithium hydroxide monohydrate Drugs 0.000 claims description 3
- 239000011777 magnesium Substances 0.000 claims description 3
- 229910052749 magnesium Inorganic materials 0.000 claims description 3
- 238000010992 reflux Methods 0.000 claims description 3
- 229910021591 Copper(I) chloride Inorganic materials 0.000 claims description 2
- GSNUFIFRDBKVIE-UHFFFAOYSA-N DMF Natural products CC1=CC=C(C)O1 GSNUFIFRDBKVIE-UHFFFAOYSA-N 0.000 claims description 2
- MHABMANUFPZXEB-UHFFFAOYSA-N O-demethyl-aloesaponarin I Natural products O=C1C2=CC=CC(O)=C2C(=O)C2=C1C=C(O)C(C(O)=O)=C2C MHABMANUFPZXEB-UHFFFAOYSA-N 0.000 claims description 2
- 239000007810 chemical reaction solvent Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- OXBLHERUFWYNTN-UHFFFAOYSA-M copper(I) chloride Chemical compound [Cu]Cl OXBLHERUFWYNTN-UHFFFAOYSA-M 0.000 claims description 2
- 238000003810 ethyl acetate extraction Methods 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 238000001953 recrystallisation Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 7
- 238000002444 silanisation Methods 0.000 abstract description 6
- 230000001012 protector Effects 0.000 abstract 3
- OJZNZOXALZKPEA-UHFFFAOYSA-N chloro-methyl-diphenylsilane Chemical compound C=1C=CC=CC=1[Si](Cl)(C)C1=CC=CC=C1 OJZNZOXALZKPEA-UHFFFAOYSA-N 0.000 abstract 2
- 230000002194 synthesizing effect Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 description 16
- 238000003756 stirring Methods 0.000 description 14
- 238000010792 warming Methods 0.000 description 13
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- 239000012044 organic layer Substances 0.000 description 9
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 8
- 229960000980 entecavir Drugs 0.000 description 8
- 238000009413 insulation Methods 0.000 description 8
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 6
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical class [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 4
- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- KRWMERLEINMZFT-UHFFFAOYSA-N O6-benzylguanine Chemical compound C=12NC=NC2=NC(N)=NC=1OCC1=CC=CC=C1 KRWMERLEINMZFT-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 239000000706 filtrate Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- -1 methylols Chemical class 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- KDCGOANMDULRCW-UHFFFAOYSA-N 7H-purine Chemical compound N1=CNC2=NC=NC2=C1 KDCGOANMDULRCW-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 241000700721 Hepatitis B virus Species 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound 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 description 2
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 2
- 238000002425 crystallisation Methods 0.000 description 2
- 230000008025 crystallization Effects 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000006735 epoxidation reaction Methods 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 208000002672 hepatitis B Diseases 0.000 description 2
- 125000006239 protecting group Chemical group 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000008213 purified water Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910000033 sodium borohydride Inorganic materials 0.000 description 2
- 239000012279 sodium borohydride Substances 0.000 description 2
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 2
- 238000006276 transfer reaction Methods 0.000 description 2
- CMBMUYICTPOEOA-UHFFFAOYSA-N (2-chloro-1-methoxyethyl)benzene Chemical compound COC(CCl)C1=CC=CC=C1 CMBMUYICTPOEOA-UHFFFAOYSA-N 0.000 description 1
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- DYOOCKYPJSMCFX-UHFFFAOYSA-N 2-phenylmethoxy-7h-purine Chemical compound N=1C=C2NC=NC2=NC=1OCC1=CC=CC=C1 DYOOCKYPJSMCFX-UHFFFAOYSA-N 0.000 description 1
- 230000004543 DNA replication Effects 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 1
- DKGAVHZHDRPRBM-UHFFFAOYSA-N Tert-Butanol Chemical compound CC(C)(C)O DKGAVHZHDRPRBM-UHFFFAOYSA-N 0.000 description 1
- 102000003929 Transaminases Human genes 0.000 description 1
- 108090000340 Transaminases Proteins 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- LVZGQWKTUCVPBQ-UHFFFAOYSA-N acetic acid;trifluoroborane Chemical compound CC(O)=O.FB(F)F LVZGQWKTUCVPBQ-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 125000001309 chloro group Chemical group Cl* 0.000 description 1
- KWYZNESIGBQHJK-UHFFFAOYSA-N chloro-dimethyl-phenylsilane Chemical compound C[Si](C)(Cl)C1=CC=CC=C1 KWYZNESIGBQHJK-UHFFFAOYSA-N 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- VSSAZBXXNIABDN-UHFFFAOYSA-N cyclohexylmethanol Chemical compound OCC1CCCCC1 VSSAZBXXNIABDN-UHFFFAOYSA-N 0.000 description 1
- 238000006298 dechlorination reaction Methods 0.000 description 1
- NKLCNNUWBJBICK-UHFFFAOYSA-N dess–martin periodinane Chemical compound C1=CC=C2I(OC(=O)C)(OC(C)=O)(OC(C)=O)OC(=O)C2=C1 NKLCNNUWBJBICK-UHFFFAOYSA-N 0.000 description 1
- LSXWFXONGKSEMY-UHFFFAOYSA-N di-tert-butyl peroxide Chemical compound CC(C)(C)OOC(C)(C)C LSXWFXONGKSEMY-UHFFFAOYSA-N 0.000 description 1
- FBCCMZVIWNDFMO-UHFFFAOYSA-N dichloroacetyl chloride Chemical compound ClC(Cl)C(Cl)=O FBCCMZVIWNDFMO-UHFFFAOYSA-N 0.000 description 1
- XEBCWEDRGPSHQH-YUMQZZPRSA-N dipropan-2-yl (2s,3s)-2,3-dihydroxybutanedioate Chemical compound CC(C)OC(=O)[C@@H](O)[C@H](O)C(=O)OC(C)C XEBCWEDRGPSHQH-YUMQZZPRSA-N 0.000 description 1
- 150000002118 epoxides Chemical class 0.000 description 1
- 239000002223 garnet Substances 0.000 description 1
- 238000004128 high performance liquid chromatography Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 210000004185 liver Anatomy 0.000 description 1
- 238000005822 methylenation reaction Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- CCTHTLJWXPUNGT-UHFFFAOYSA-L nysted reagent Chemical compound C1CCOC1.Br[Zn]C[Zn]C[Zn]Br CCTHTLJWXPUNGT-UHFFFAOYSA-L 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000007170 pathology Effects 0.000 description 1
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 1
- 235000015320 potassium carbonate Nutrition 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 210000002966 serum Anatomy 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010189 synthetic method Methods 0.000 description 1
- VXUYXOFXAQZZMF-UHFFFAOYSA-N titanium(IV) isopropoxide Chemical compound CC(C)O[Ti](OC(C)C)(OC(C)C)OC(C)C VXUYXOFXAQZZMF-UHFFFAOYSA-N 0.000 description 1
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 230000029812 viral genome replication Effects 0.000 description 1
- 230000003612 virological effect Effects 0.000 description 1
Abstract
Description
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2009101165320A CN101531660B (en) | 2009-04-14 | 2009-04-14 | Industrialization production process of entecavir-monohydrate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN2009101165320A CN101531660B (en) | 2009-04-14 | 2009-04-14 | Industrialization production process of entecavir-monohydrate |
Publications (2)
Publication Number | Publication Date |
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CN101531660A true CN101531660A (en) | 2009-09-16 |
CN101531660B CN101531660B (en) | 2012-07-04 |
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Family Applications (1)
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CN2009101165320A Active CN101531660B (en) | 2009-04-14 | 2009-04-14 | Industrialization production process of entecavir-monohydrate |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102898453A (en) * | 2011-12-20 | 2013-01-30 | 长沙理工大学 | Synthesis method of diphenylmethylchlorosilane |
CN104230933A (en) * | 2014-09-11 | 2014-12-24 | 赵明亮 | Process for synthesizing entecavir |
CN105001258A (en) * | 2015-08-12 | 2015-10-28 | 黄石市利福达医药化工有限公司 | Preparation method for diphenylphosphinic acid |
CN113004281A (en) * | 2019-12-21 | 2021-06-22 | 南通诺泰生物医药技术有限公司 | Preparation method of entecavir intermediate |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5206244A (en) * | 1990-10-18 | 1993-04-27 | E. R. Squibb & Sons, Inc. | Hydroxymethyl (methylenecyclopentyl) purines and pyrimidines |
AU4090697A (en) * | 1996-09-03 | 1998-03-26 | Bristol-Myers Squibb Company | Improved process for preparing the antiviral agent {1s-(1alpha, 3alpha, 4beta)}-2-amino-1,9-dihydro-9-{4-hydroxy-3-(hydroxymethyl)-2 -methylenecyclopentyl}-6h-purin-6-one |
IN2012DN00605A (en) * | 2002-12-11 | 2015-06-12 | Bristol Mayers Squibb Company | |
CN101050216B (en) * | 2006-04-05 | 2011-01-12 | 杭州容立医药科技有限公司 | Method for synthesizing medication Entecavir of anti hepatitis B |
-
2009
- 2009-04-14 CN CN2009101165320A patent/CN101531660B/en active Active
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102898453A (en) * | 2011-12-20 | 2013-01-30 | 长沙理工大学 | Synthesis method of diphenylmethylchlorosilane |
CN104230933A (en) * | 2014-09-11 | 2014-12-24 | 赵明亮 | Process for synthesizing entecavir |
CN105001258A (en) * | 2015-08-12 | 2015-10-28 | 黄石市利福达医药化工有限公司 | Preparation method for diphenylphosphinic acid |
CN113004281A (en) * | 2019-12-21 | 2021-06-22 | 南通诺泰生物医药技术有限公司 | Preparation method of entecavir intermediate |
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Publication number | Publication date |
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CN101531660B (en) | 2012-07-04 |
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Date of cancellation: 20210618 Granted publication date: 20120704 Pledgee: Agricultural Bank of China Taihe County Limited by Share Ltd. branch Pledgor: ANHUI BIOCHEM UNITED PHARMACEUTICAL Co.,Ltd. Registration number: 2018340000175 |
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Denomination of invention: Industrial production process of entecavir monohydrate Effective date of registration: 20210629 Granted publication date: 20120704 Pledgee: Agricultural Bank of China Taihe County Limited by Share Ltd. branch Pledgor: ANHUI BIOCHEM UNITED PHARMACEUTICAL Co.,Ltd. Registration number: Y2021340000011 |
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Address after: 236600 No. 108, Shahe Road, Taihe County, Anhui Patentee after: Anhui Baker Pharmaceutical Co.,Ltd. Address before: 236600 No. 108, Shahe Road, Taihe County, Anhui Patentee before: ANHUI BIOCHEM UNITED PHARMACEUTICAL Co.,Ltd. |