AP3630A - Improved method for synthesizing pirfenidone - Google Patents

Improved method for synthesizing pirfenidone

Info

Publication number
AP3630A
AP3630A AP2012006052A AP2012006052A AP3630A AP 3630 A AP3630 A AP 3630A AP 2012006052 A AP2012006052 A AP 2012006052A AP 2012006052 A AP2012006052 A AP 2012006052A AP 3630 A AP3630 A AP 3630A
Authority
AP
ARIPO
Prior art keywords
improved method
synthesizing pirfenidone
pirfenidone
synthesizing
improved
Prior art date
Application number
AP2012006052A
Other languages
English (en)
Other versions
AP2012006052A0 (en
Inventor
Michael John Cyr
Sabine Marie-Francoise Brigitte Boutet
Ramachandran Radhakrishnan
Original Assignee
Intermune Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=43298478&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=AP3630(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Intermune Inc filed Critical Intermune Inc
Publication of AP2012006052A0 publication Critical patent/AP2012006052A0/xx
Application granted granted Critical
Publication of AP3630A publication Critical patent/AP3630A/xx

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D213/00Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D213/62Oxygen or sulfur atoms
    • C07D213/63One oxygen atom
    • C07D213/64One oxygen atom attached in position 2 or 6
    • C07D213/6432-Phenoxypyridines; Derivatives thereof
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D213/00Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members
    • C07D213/02Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members
    • C07D213/04Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D213/60Heterocyclic compounds containing six-membered rings, not condensed with other rings, with one nitrogen atom as the only ring hetero atom and three or more double bonds between ring members or between ring members and non-ring members having three double bonds between ring members or between ring members and non-ring members having no bond between the ring nitrogen atom and a non-ring member or having only hydrogen or carbon atoms directly attached to the ring nitrogen atom with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D213/62Oxygen or sulfur atoms
    • C07D213/63One oxygen atom
    • C07D213/64One oxygen atom attached in position 2 or 6
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01NPRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
    • A01N43/00Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
    • A01N43/34Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
    • A01N43/40Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/435Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with one nitrogen as the only ring hetero atom
    • A61K31/44Non condensed pyridines; Hydrogenated derivatives thereof
    • A61K31/4412Non condensed pyridines; Hydrogenated derivatives thereof having oxo groups directly attached to the heterocyclic ring
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P1/00Drugs for disorders of the alimentary tract or the digestive system
    • A61P1/16Drugs for disorders of the alimentary tract or the digestive system for liver or gallbladder disorders, e.g. hepatoprotective agents, cholagogues, litholytics
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P11/00Drugs for disorders of the respiratory system
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P13/00Drugs for disorders of the urinary system
    • A61P13/08Drugs for disorders of the urinary system of the prostate
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P13/00Drugs for disorders of the urinary system
    • A61P13/12Drugs for disorders of the urinary system of the kidneys
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00Drugs for dermatological disorders
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P17/00Drugs for dermatological disorders
    • A61P17/02Drugs for dermatological disorders for treating wounds, ulcers, burns, scars, keloids, or the like
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P19/00Drugs for skeletal disorders
    • A61P19/02Drugs for skeletal disorders for joint disorders, e.g. arthritis, arthrosis
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P29/00Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P43/00Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P9/00Drugs for disorders of the cardiovascular system

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Animal Behavior & Ethology (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Epidemiology (AREA)
  • Rheumatology (AREA)
  • Dermatology (AREA)
  • Urology & Nephrology (AREA)
  • Agronomy & Crop Science (AREA)
  • Pest Control & Pesticides (AREA)
  • Physical Education & Sports Medicine (AREA)
  • Immunology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Pulmonology (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Cardiology (AREA)
  • Pain & Pain Management (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Plant Pathology (AREA)
  • Dentistry (AREA)
  • Wood Science & Technology (AREA)
  • Zoology (AREA)
  • Environmental Sciences (AREA)
  • Pyridine Compounds (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)
AP2012006052A 2009-06-03 2010-06-02 Improved method for synthesizing pirfenidone AP3630A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US18358809P 2009-06-03 2009-06-03
PCT/US2010/037090 WO2010141600A2 (en) 2009-06-03 2010-06-02 Improved method for synthesizing pirfenidone

Publications (2)

Publication Number Publication Date
AP2012006052A0 AP2012006052A0 (en) 2012-02-29
AP3630A true AP3630A (en) 2016-03-08

Family

ID=43298478

Family Applications (1)

Application Number Title Priority Date Filing Date
AP2012006052A AP3630A (en) 2009-06-03 2010-06-02 Improved method for synthesizing pirfenidone

Country Status (35)

Country Link
US (6) US20110003863A1 (xx)
EP (1) EP2440543B1 (xx)
JP (2) JP5848244B2 (xx)
KR (1) KR101734858B1 (xx)
CN (1) CN102482255A (xx)
AP (1) AP3630A (xx)
AR (1) AR076974A1 (xx)
AU (1) AU2010256693B2 (xx)
BR (1) BRPI1011015B8 (xx)
CA (1) CA2764043C (xx)
CL (1) CL2011003069A1 (xx)
DK (1) DK2440543T3 (xx)
EA (1) EA021826B1 (xx)
ES (1) ES2538103T3 (xx)
GE (1) GEP20156223B (xx)
HN (1) HN2011003187A (xx)
HR (1) HRP20150696T1 (xx)
HU (1) HUE026014T2 (xx)
IL (1) IL216565A (xx)
MA (1) MA33489B1 (xx)
MX (1) MX2011012654A (xx)
MY (1) MY162443A (xx)
NI (1) NI201100211A (xx)
NZ (1) NZ596872A (xx)
PE (1) PE20120398A1 (xx)
PL (1) PL2440543T3 (xx)
PT (1) PT2440543E (xx)
RS (1) RS54031B1 (xx)
SG (1) SG176648A1 (xx)
SI (1) SI2440543T1 (xx)
TN (1) TN2011000615A1 (xx)
TW (1) TWI434833B (xx)
UA (1) UA106759C2 (xx)
WO (1) WO2010141600A2 (xx)
ZA (1) ZA201108794B (xx)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
MX2010012848A (es) 2008-06-03 2011-03-01 Intermune Inc Compuestos y metodos para tratar trastornos inflamatorios y fibroticos.
DK2670242T3 (da) 2011-01-31 2022-05-02 Avalyn Pharma Inc Aerosolpirfenidon- og pyridonanalogforbindelser og anvendelser deraf
US10105356B2 (en) 2011-01-31 2018-10-23 Avalyn Pharma Inc. Aerosol pirfenidone and pyridone analog compounds and uses thereof
AR092742A1 (es) 2012-10-02 2015-04-29 Intermune Inc Piridinonas antifibroticas
CA2936330C (en) 2014-01-10 2023-01-03 Genoa Pharmaceuticals Inc. Aerosol pirfenidone and pyridone analog compounds and uses thereof
CN106459042B (zh) 2014-04-02 2019-06-28 英特穆恩公司 抗纤维化吡啶酮类
BR112017002980A2 (pt) * 2014-08-15 2017-12-12 Pixarbio Corp composição para inibir a inflamação em um indivíduo com um dano na coluna vertebral, método para tratar inflamação em um indivíduo tendo um dano na coluna vertebral e kit para produzir a composição
WO2016122420A1 (en) 2015-01-26 2016-08-04 Ulkar Kimya Sanayii Ve Ticaret A. S. An improved method for the synthesis and purification of pirfenidone
ITUB20154832A1 (it) * 2015-10-29 2017-04-29 Procos Spa Processo per la sintesi di pirfenidone
CN105315198A (zh) * 2015-11-02 2016-02-10 重庆康乐制药有限公司 一种吡非尼酮的晶型及其制备方法
CN105330598B (zh) * 2015-12-02 2017-11-14 新发药业有限公司 一种吡非尼酮的制备方法
WO2017122139A1 (en) * 2016-01-14 2017-07-20 Laurus Labs Limited An improved process for the preparation of pirfenidone
US11066368B2 (en) 2016-01-14 2021-07-20 Laurus Labs Limited Process for the preparation and particle size reduction of pirfenidone
WO2017130166A1 (en) * 2016-01-31 2017-08-03 Granules India Limited An improved process for the preparation of highly pure anti-fibrotic drug
CA2937365C (en) 2016-03-29 2018-09-18 F. Hoffmann-La Roche Ag Granulate formulation of 5-methyl-1-phenyl-2-(1h)-pyridone and method of making the same
IT201600071672A1 (it) * 2016-07-08 2018-01-08 Dipharma Francis Srl Metodo per sintetizzare un farmaco immunosoppressore
IT201600108927A1 (it) * 2016-10-27 2018-04-27 Dipharma Francis Srl Metodo per sintetizzare un farmaco antifibrotico
US20180009753A1 (en) * 2016-07-08 2018-01-11 Dipharma Francis S.R.L. Method for preparing an antifibrotic agent
WO2018083709A1 (en) * 2016-11-07 2018-05-11 Msn Laboratories Private Limited, R&D Center Improved process for the preparation of pure 5-methyl-1-phenyl-2-1 (h)-pyridone
WO2018178996A1 (en) * 2017-03-28 2018-10-04 Natco Pharma Limited Improved process for the preparation of pirfenidone
CA3108048A1 (en) 2017-07-31 2019-02-07 Washington University Pirfenidone derivatives for modulation of b lymphocyte activity and organ protection
ES2886152T3 (es) 2017-12-11 2021-12-16 Laurus Labs Ltd Un procedimiento mejorado para la preparación de pirfenidona
CN112409246B (zh) * 2019-08-21 2023-04-07 北京凯因科技股份有限公司 一种吡非尼酮的晶型及其制备方法
CN115666533A (zh) * 2020-04-22 2023-01-31 永进药品工业株式会社 具有改善的安全性和稳定性的含吡非尼酮的肠溶包衣制剂及其制备方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002085858A1 (fr) * 2001-04-20 2002-10-31 Asahi Glass Company, Limited Procede de production d'un derive de piperidine purifie
WO2003014087A1 (fr) * 2001-08-06 2003-02-20 Asahi Glass Company, Limited Procede de preparation de 5-methyl-1-phenyl-2(1h)-pyridinone
WO2008147170A1 (es) * 2007-05-29 2008-12-04 Cell Therapy Technology, S.A. De C.V. Nuevo proceso de síntesis para la obtención de 5-metil-1-fenil-2- (ih) -piridona, composición y uso de la misma

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839346A (en) * 1972-12-18 1974-10-01 Affiliated Med Res N-substituted pyridone and general method for preparing pyridones
CA2099868C (en) * 1991-01-31 2002-04-02 Thomas Richard Belliotti Substituted 4,6-di-tertiary-butyl-5-hydroxy-pyrimidines
CN1218942C (zh) 2002-06-11 2005-09-14 中南大学湘雅医学院 抗纤维化吡啶酮化合物及其生产工艺方法
CN100396669C (zh) * 2006-03-15 2008-06-25 浙江省医学科学院 一种抗纤维化药物吡非尼酮的制备方法
KR101583737B1 (ko) 2007-06-20 2016-01-11 오스펙스 파마슈티칼스, 인코포레이티드 섬유증 저해제로서의 치환된 n-아릴 피리디논
US20090131485A1 (en) * 2007-09-10 2009-05-21 Concert Pharmaceuticals, Inc. Deuterated pirfenidone

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002085858A1 (fr) * 2001-04-20 2002-10-31 Asahi Glass Company, Limited Procede de production d'un derive de piperidine purifie
WO2003014087A1 (fr) * 2001-08-06 2003-02-20 Asahi Glass Company, Limited Procede de preparation de 5-methyl-1-phenyl-2(1h)-pyridinone
WO2008147170A1 (es) * 2007-05-29 2008-12-04 Cell Therapy Technology, S.A. De C.V. Nuevo proceso de síntesis para la obtención de 5-metil-1-fenil-2- (ih) -piridona, composición y uso de la misma

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Asian Journal of Pharmadynamics *

Also Published As

Publication number Publication date
MA33489B1 (fr) 2012-08-01
WO2010141600A2 (en) 2010-12-09
ES2538103T3 (es) 2015-06-17
NI201100211A (es) 2012-08-01
DK2440543T3 (en) 2015-05-18
NZ596872A (en) 2013-12-20
JP2016026196A (ja) 2016-02-12
IL216565A0 (en) 2012-03-01
BRPI1011015A2 (pt) 2018-02-14
CL2011003069A1 (es) 2012-05-25
BRPI1011015B1 (pt) 2020-11-10
EP2440543A4 (en) 2012-11-21
PT2440543E (pt) 2015-07-03
SG176648A1 (en) 2012-01-30
AU2010256693A1 (en) 2012-01-12
US20150368200A1 (en) 2015-12-24
EA021826B1 (ru) 2015-09-30
RS54031B1 (en) 2015-10-30
KR101734858B1 (ko) 2017-05-12
HN2011003187A (es) 2015-02-02
CA2764043A1 (en) 2010-12-09
US20130345430A1 (en) 2013-12-26
JP2012528877A (ja) 2012-11-15
EA201101695A1 (ru) 2012-05-30
HUE026014T2 (en) 2016-05-30
PE20120398A1 (es) 2012-05-13
CA2764043C (en) 2018-01-16
AU2010256693B2 (en) 2015-09-17
ZA201108794B (en) 2013-03-27
KR20120016277A (ko) 2012-02-23
US20150065720A1 (en) 2015-03-05
JP5848244B2 (ja) 2016-01-27
US8519140B2 (en) 2013-08-27
IL216565A (en) 2015-06-30
US20110003863A1 (en) 2011-01-06
TWI434833B (zh) 2014-04-21
GEP20156223B (en) 2015-01-26
TN2011000615A1 (en) 2013-05-24
PL2440543T3 (pl) 2015-09-30
US20140221660A1 (en) 2014-08-07
AR076974A1 (es) 2011-07-20
EP2440543A2 (en) 2012-04-18
WO2010141600A3 (en) 2011-04-21
HRP20150696T1 (hr) 2015-08-28
US20120016133A1 (en) 2012-01-19
EP2440543B1 (en) 2015-04-15
TW201043602A (en) 2010-12-16
SI2440543T1 (sl) 2015-06-30
MY162443A (en) 2017-06-15
UA106759C2 (xx) 2014-10-10
BRPI1011015B8 (pt) 2021-05-25
CN102482255A (zh) 2012-05-30
AP2012006052A0 (en) 2012-02-29
MX2011012654A (es) 2012-01-12

Similar Documents

Publication Publication Date Title
HRP20150696T1 (hr) Poboljšani postupak za sintezu pirfenidona
IL217409A0 (en) Method for genome editing
ZA201202299B (en) Method for decreasing immunigenicity
EP2425377A4 (en) IMPROVED METHOD FOR IMAGE MODIFICATION
GB0905140D0 (en) Method
EP2386179A4 (en) METHOD FOR GENERATING REFERENCE SIGNALS
GB0902476D0 (en) Method
IL214600A0 (en) Process for preparing substituted 2-nitrobiphenyls
GB0910707D0 (en) Method
EP2496176A4 (en) ENTZELLULARISIERUNGSVERFAHREN
IL220357A0 (en) Process for preparing substituted 1-o-acyl-2-deoxy-2-fluoro-4-thio-beta-d-arabinofuranoses
IL214647A0 (en) Method for inhibiting neurodegeneration
EP2474560A4 (en) METHOD OF PREPARING AN 11 SUGAR SIALYLOLIGOSACCHARIDE PEPTIDE
PL2432877T3 (pl) Metoda otrzymywania (+) -zizaenu
GB0901444D0 (en) Method
IL214287A0 (en) Method for producing 2-aminobiphenylene
IL218140A0 (en) Process for preparing 1-phenylpyrazoles
GB0903316D0 (en) Method
HK1126182A1 (en) Process for synthesizing sevoflurance
GB2472921B (en) Well treatment method for inhibiting scale formation
EP2495239A4 (en) PROCESS FOR PREPARING HYDROXYMETHYLFURFURAL
GB0902034D0 (en) Method
GB0900560D0 (en) Method
ZA201203541B (en) Method for producing silicon
EP2420492A4 (en) PROCESS FOR PREPARING 2-HALOGEN-6-SUBSTITUTED 4-TRIFLUOROMETHYLPYRIDINE