MA21265A1 - Procede de preparation d'acide 5r, 6s-6- (1r-hydroxyethyl)-2-(cis-1-oxo-3-thiolanylthio)-2-penem-3-carboxyliques diastere-isomeriques. - Google Patents

Procede de preparation d'acide 5r, 6s-6- (1r-hydroxyethyl)-2-(cis-1-oxo-3-thiolanylthio)-2-penem-3-carboxyliques diastere-isomeriques.

Info

Publication number: MA21265A1
Authority: MA; Morocco
Prior art keywords: thiolanylthio; penem; oxo; hydroxyethyl; carboxylic
Prior art date: 1987-05-11

Application number

MA21506A

Other languages

English (en)

Inventor

Alfred Volkmann Robert

Original Assignee

Pfizer

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.)

1987-05-11

Filing date

1988-05-10

Publication date

1988-12-31

1988-05-10 Application filed by Pfizer filed Critical Pfizer

1988-12-31 Publication of MA21265A1 publication Critical patent/MA21265A1/fr

Links

238000000034 method Methods 0.000 title abstract 2
239000002253 acid Substances 0.000 title 1
239000003242 anti bacterial agent Substances 0.000 abstract 1
230000015572 biosynthetic process Effects 0.000 abstract 1
150000002148 esters Chemical class 0.000 abstract 1
238000001727 in vivo Methods 0.000 abstract 1
239000000543 intermediate Substances 0.000 abstract 1
150000003839 salts Chemical class 0.000 abstract 1
238000003786 synthesis reaction Methods 0.000 abstract 1
230000009885 systemic effect Effects 0.000 abstract 1

Classifications

- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D499/00—Heterocyclic compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula:, e.g. penicillins, penems; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
- C07D499/86—Heterocyclic compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula:, e.g. penicillins, penems; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring with only atoms other than nitrogen atoms directly attached in position 6 and a carbon atom having three bonds to hetero atoms with at the most one bond to halogen, e.g. an ester or nitrile radical, directly attached in position 2
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
- C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
- C07D409/12—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a chain containing hetero atoms as chain links
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D303/00—Compounds containing three-membered rings having one oxygen atom as the only ring hetero atom
- C07D303/02—Compounds containing oxirane rings
- C07D303/12—Compounds containing oxirane rings with hydrocarbon radicals, substituted by singly or doubly bound oxygen atoms
- C07D303/16—Compounds containing oxirane rings with hydrocarbon radicals, substituted by singly or doubly bound oxygen atoms by esterified hydroxyl radicals
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/26—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur 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
- C07D333/28—Halogen atoms
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/26—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur 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
- C07D333/30—Hetero atoms other than halogen
- C07D333/32—Oxygen atoms
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/04—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur atom
- C07D333/26—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings not substituted on the ring sulphur 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
- C07D333/30—Hetero atoms other than halogen
- C07D333/34—Sulfur atoms
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D333/00—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom
- C07D333/02—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings
- C07D333/46—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings substituted on the ring sulfur atom
- C07D333/48—Heterocyclic compounds containing five-membered rings having one sulfur atom as the only ring hetero atom not condensed with other rings substituted on the ring sulfur atom by oxygen atoms
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D499/00—Heterocyclic compounds containing 4-thia-1-azabicyclo [3.2.0] heptane ring systems, i.e. compounds containing a ring system of the formula:, e.g. penicillins, penems; Such ring systems being further condensed, e.g. 2,3-condensed with an oxygen-, nitrogen- or sulfur-containing hetero ring
- C07D499/88—Compounds with a double bond between positions 2 and 3 and a carbon atom having three bonds to hetero atoms with at the most one bond to halogen, e.g. an ester or nitrile radical, directly attached in position 2
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Health & Medical Sciences (AREA)
General Health & Medical Sciences (AREA)
Veterinary Medicine (AREA)
General Chemical & Material Sciences (AREA)
Medicinal Chemistry (AREA)
Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
Oncology (AREA)
Pharmacology & Pharmacy (AREA)
Life Sciences & Earth Sciences (AREA)
Animal Behavior & Ethology (AREA)
Communicable Diseases (AREA)
Public Health (AREA)
Chemical Kinetics & Catalysis (AREA)
Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Nitrogen Condensed Heterocyclic Rings (AREA)
Heterocyclic Compounds Containing Sulfur Atoms (AREA)
Epoxy Compounds (AREA)
Cephalosporin Compounds (AREA)
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems (AREA)
Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)
Steroid Compounds (AREA)

MA21506A 1987-05-11 1988-05-10 Procede de preparation d'acide 5r, 6s-6- (1r-hydroxyethyl)-2-(cis-1-oxo-3-thiolanylthio)-2-penem-3-carboxyliques diastere-isomeriques. MA21265A1 (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
PCT/US1987/001114 WO1988008845A1 (fr)	1987-05-11	1987-05-11	Acides diastereomeres 5r,6s-6-(1r-hydroxyethyle)-2-(cis-1-oxo-3-thiolanylthio)-2-penem-3-carboxyliques

Publications (1)

Publication Number	Publication Date
MA21265A1 true MA21265A1 (fr)	1988-12-31

Family

ID=22202388

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
MA21506A MA21265A1 (fr)	1987-05-11	1988-05-10	Procede de preparation d'acide 5r, 6s-6- (1r-hydroxyethyl)-2-(cis-1-oxo-3-thiolanylthio)-2-penem-3-carboxyliques diastere-isomeriques.

Country Status (27)

Country	Link
US (2)	US5013729A (fr)
EP (1)	EP0294934B1 (fr)
JP (2)	JPH0737463B2 (fr)
KR (1)	KR900006840B1 (fr)
CN (2)	CN1023016C (fr)
AT (1)	ATE132869T1 (fr)
AU (1)	AU603665B2 (fr)
CA (1)	CA1338830C (fr)
CS (1)	CS269999B2 (fr)
DD (1)	DD270074A5 (fr)
DE (1)	DE3854874T2 (fr)
DK (1)	DK170443B1 (fr)
EG (1)	EG18481A (fr)
ES (1)	ES2081805T3 (fr)
FI (1)	FI96423C (fr)
GR (1)	GR3019094T3 (fr)
IE (1)	IE70587B1 (fr)
IL (1)	IL86288A0 (fr)
MA (1)	MA21265A1 (fr)
MY (1)	MY104306A (fr)
NZ (1)	NZ224552A (fr)
PH (1)	PH23931A (fr)
PL (1)	PL159558B1 (fr)
PT (1)	PT87443B (fr)
WO (1)	WO1988008845A1 (fr)
YU (1)	YU45059B (fr)
ZA (1)	ZA883291B (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0352977A3 (fr) *	1988-07-28	1991-08-07	Pfizer Inc.	Procédé d'oxydation stéréosélectif
EP0382418A3 (fr) *	1989-02-09	1991-10-23	Pfizer Inc.	Procédé de préparation d'esters thiolanyl-3 sulfonates optiquement actifs
MX20084A (es) *	1989-03-28	1993-03-01	Pfizer	Derivados de 2 -carbapenem antibacterianos
US5321020A (en) *	1989-03-28	1994-06-14	Pfizer Inc.	Antibacterial 2-carbapenem derivatives
US5075439A (en) *	1990-08-17	1991-12-24	Pfizer Inc.	Processes for (3S,4R)-3-[1(R)-t-butyl-dimethylsilyloxy)-ethyl]-4-[1-oxo-3-thiolanylthio(thiocarbonyl)thio]azetidin-2-ones and intermediates therefor
EP1712633A1 (fr) *	2003-12-02	2006-10-18	Mercian Corporation	Procede de production de derives de tetrahydrothiophene optiquement actif et procede de cristallisation de tetrahydrothiopen-3-ol optiquement actif
JP2005314374A (ja) *	2004-03-31	2005-11-10	Daiso Co Ltd	３−ヒドロキシチオランの新規製法
KR100939347B1 (ko)	2005-07-20	2010-01-29	(주)카이로드	광학적으로 순수한 (ｓ)-3-히드록시 피롤리딘의 제조방법
PE20080940A1 (es) *	2006-06-28	2008-07-09	Pfizer Prod Inc	Profarmacos de penem
CN101479279B (zh) *	2006-06-28	2011-08-17	辉瑞产品公司	培南前药
WO2008059367A1 (fr) *	2006-11-14	2008-05-22	Pfizer Products Inc.	Promédicaments de sulopénème
US20080125408A1 (en) *	2006-11-14	2008-05-29	Pfizer Inc	Penem prodrug
EP2195443B1 (fr)	2007-08-24	2015-01-07	Codexis, Inc.	Polypeptides cétoréductases ayant des propriétés améliorées pour la production stéréosélective de (<i>r</i>)-3-hydroxythiolane
CN105061394A (zh) *	2015-09-11	2015-11-18	北京工商大学	一种2-丙基-4-乙酰氧基四氢噻吩的制备方法
EP4382529A1 (fr)	2022-12-07	2024-06-12	Bayer Consumer Care AG	Procédé de préparation de (3s)-pyrrolidin-3-ol pur et de chlorhydrate de (3s)-pyrrolidin-3-ol pur

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0130025B1 (fr) *	1983-06-21	1987-07-08	Pfizer Inc.	Dérivés de 2-alkylthiopénème
US4619924A (en) *	1984-05-18	1986-10-28	Pfizer Inc.	2-alkylthiopenem derivatives
US4739047A (en) *	1985-10-17	1988-04-19	Pfizer Inc.	Intermediates for 2-(1-oxo-3-thiolanyl)-2-penem antibiotics
ZA867809B (en) *	1985-10-17	1988-05-25	Pfizer	Process for 2-(1-oxo-3-thiolanyl)-2-penem antibiotics
EP0223397B1 (fr) *	1985-10-17	1991-09-04	Pfizer Inc.	Procédé pour préparer des antibiotiques dérivés du 2-(1-oxo-3-thiolanyl)-2-pénème
US4806637A (en) *	1986-03-17	1989-02-21	Schering Corporation	6-(Hydroxyethyl)-2-(heterocyclylthio)-penem-3-carboxylates
US4695626A (en) *	1986-07-29	1987-09-22	Pfizer Inc.	1-aza-4,5-dithiabicyclo [4.2.0] oct-2-en-8-one-2 carboxylate esters
PH24872A (en) *	1986-08-25	1990-12-26	Schering Corp	(5r,6s,8r)-6-(-1-hydroxyethyl)-2-(3r-pyrrolidin-2-one-3-yl)thiopenem-3-carboxylic acid

1987
- 1987-05-11 US US07/460,118 patent/US5013729A/en not_active Expired - Lifetime
- 1987-05-11 WO PCT/US1987/001114 patent/WO1988008845A1/fr not_active Ceased
1988
- 1988-05-04 ES ES88304016T patent/ES2081805T3/es not_active Expired - Lifetime
- 1988-05-04 DE DE3854874T patent/DE3854874T2/de not_active Expired - Fee Related
- 1988-05-04 AT AT88304016T patent/ATE132869T1/de not_active IP Right Cessation
- 1988-05-04 EP EP88304016A patent/EP0294934B1/fr not_active Expired - Lifetime
- 1988-05-05 CA CA000565961A patent/CA1338830C/fr not_active Expired - Fee Related
- 1988-05-05 IL IL86288A patent/IL86288A0/xx unknown
- 1988-05-06 MY MYPI88000475A patent/MY104306A/en unknown
- 1988-05-06 CS CS883119A patent/CS269999B2/cs not_active IP Right Cessation
- 1988-05-08 EG EG256/88A patent/EG18481A/xx active
- 1988-05-09 NZ NZ224552A patent/NZ224552A/xx unknown
- 1988-05-09 PL PL1988272358A patent/PL159558B1/pl unknown
- 1988-05-09 PT PT87443A patent/PT87443B/pt not_active IP Right Cessation
- 1988-05-10 JP JP63111717A patent/JPH0737463B2/ja not_active Expired - Lifetime
- 1988-05-10 DK DK255888A patent/DK170443B1/da not_active IP Right Cessation
- 1988-05-10 ZA ZA883291A patent/ZA883291B/xx unknown
- 1988-05-10 IE IE141188A patent/IE70587B1/en not_active IP Right Cessation
- 1988-05-10 DD DD88315631A patent/DD270074A5/de not_active IP Right Cessation
- 1988-05-10 AU AU15896/88A patent/AU603665B2/en not_active Ceased
- 1988-05-10 MA MA21506A patent/MA21265A1/fr unknown
- 1988-05-10 KR KR1019880005398A patent/KR900006840B1/ko not_active Expired
- 1988-05-10 CN CN88102863A patent/CN1023016C/zh not_active Expired - Fee Related
- 1988-05-10 PH PH36907A patent/PH23931A/en unknown
- 1988-05-10 YU YU906/88A patent/YU45059B/xx unknown
1989
- 1989-11-10 FI FI895369A patent/FI96423C/fi not_active IP Right Cessation
1992
- 1992-11-17 CN CN92113234A patent/CN1036996C/zh not_active Expired - Fee Related
1993
- 1993-02-11 US US08/016,413 patent/US5319103A/en not_active Expired - Lifetime
1994
- 1994-10-19 JP JP6278577A patent/JP2544902B2/ja not_active Expired - Lifetime
1996
- 1996-02-23 GR GR960400514T patent/GR3019094T3/el unknown

Also Published As

Publication number	Publication date
AU1589688A (en)	1988-11-17
IE70587B1 (en)	1996-12-11
ES2081805T3 (es)	1996-03-16
JPH0737463B2 (ja)	1995-04-26
ATE132869T1 (de)	1996-01-15
DK170443B1 (da)	1995-09-04
CS269999B2 (en)	1990-05-14
NZ224552A (en)	1989-10-27
EP0294934A3 (en)	1989-01-25
EP0294934B1 (fr)	1996-01-10
FI96423B (fi)	1996-03-15
JPS63287781A (ja)	1988-11-24
MY104306A (en)	1994-03-31
YU45059B (en)	1991-06-30
PL159558B1 (pl)	1992-12-31
IE881411L (en)	1988-11-11
PT87443A (pt)	1989-05-31
DK255888A (da)	1989-02-07
DK255888D0 (da)	1988-05-10
JPH07278137A (ja)	1995-10-24
ZA883291B (en)	1989-12-27
KR880013943A (ko)	1988-12-22
PL272358A1 (en)	1989-10-30
CA1338830C (fr)	1997-01-07
AU603665B2 (en)	1990-11-22
GR3019094T3 (en)	1996-05-31
US5319103A (en)	1994-06-07
PH23931A (en)	1990-01-23
DD270074A5 (de)	1989-07-19
KR900006840B1 (ko)	1990-09-22
CN1036996C (zh)	1998-01-14
DE3854874D1 (de)	1996-02-22
EG18481A (en)	1993-06-30
EP0294934A2 (fr)	1988-12-14
YU90688A (en)	1989-12-31
CS311988A2 (en)	1989-08-14
PT87443B (pt)	1992-08-31
IL86288A0 (en)	1988-11-15
US5013729A (en)	1991-05-07
WO1988008845A1 (fr)	1988-11-17
JP2544902B2 (ja)	1996-10-16
FI96423C (fi)	1996-06-25
CN1073442A (zh)	1993-06-23
CN88102863A (zh)	1988-12-21
CN1023016C (zh)	1993-12-08
DE3854874T2 (de)	1996-05-23
FI895369A0 (fi)	1989-11-10

Publication	Publication Date	Title
PT87443A (pt)	1989-05-31	Process for the preparation of diastereomeric 5r,6s-6-(1r-hydroxyethyl)-2-(cis-1-oxo-3-thiolanylthio)-2-penem-3-carboxylic acids
RO79394A (fr)	1983-02-01	Procede pour la purification de l'acide phosphorique
MA21922A1 (fr)	1991-04-01	Procede de purification d'acides aminomethylene-phosphoniques .
OA06707A (fr)	1982-05-31	Procédé de purification d'un acide phosphorique de voie humide.
RO79837A (fr)	1983-02-01	Procede pour la preparation de l'acide cyanhydrique
OA06490A (fr)	1981-08-31	Procédé de purification de l'acide phosphorique.
RO74500A (fr)	1981-01-30	Procede pour la purification d'acide terephtalatique
RO75961A (fr)	1981-03-30	Procede pour la preparation des esters d'acide triazoline-thiono-(thiol)-phosphorique
RO80004A (fr)	1982-10-11	Procede pour la preparation des derives de l'ester de l'acide cyclopropancarboxylique
OA07310A (fr)	1984-08-31	Procédé de purification d'acide phosphorique de voie humide.
BE886299A (fr)	1981-03-16	Procede pour la preparation de derives d'esters d'acide apovincaminique
BE855237A (fr)	1977-11-30	Procede pour la purification de l'acide adipique
RO92794A (fr)	1987-11-30	Procede pour la preparation des esters d'acide 2-brome-4-methylimdazole-5-carboxilique
PT81864A (fr)	1986-02-01	Procede de preparation de nouvelles compositions contenant butylglycol pour la desinfection de surfaces par voie aerienne
FR2669330B1 (fr)	1993-10-15	Procede de preparation de l'acide betha-mercaptopropionique.
FR2634196B1 (fr)	1993-06-18	Procede de preparation de l'acide methoxyacetique
FR2600058B1 (fr)	1988-08-19	Procede de preparation d'esters organiques alpha-halogenes de l'acide carbonique
FR2655646B1 (fr)	1992-01-17	Procede de preparation de diesters de l'acide hexenediouique.
FR2611743B1 (fr)	1994-06-10	Procede pour la production de l-aminoacides ou d'acide 5'-inosinique par fermentation
FR2631027B1 (fr)	1992-07-03	Procede de preparation d'esters de l'acide n-cyanethanimidique
FR2619108B1 (fr)	1989-12-01	Procede de preparation de l'acide n6-benzyloxycarbonyl diamino-2,6 pimelamique sous les formes l,l ou d,d ou racemique
FR2609376B1 (fr)	1990-12-07	Procede de preparation de l'aspartame par voie enzymatique
FR2686877B1 (fr)	1995-03-24	Procede de preparation de l'acide orthohydroxyphenylacetique.
FR2653128B1 (fr)	1995-03-17	Procede pour la preparation de l'acide chenodesoxycholique.
MA21185A1 (fr)	1988-10-01	Procede de preparation d'acide phosphorique exempt de titane.