ClassID:

92670

C07C227/42 - CPC Classification

Classification description:

Preparation of compounds containing amino and carboxyl groups bound to the same carbon skeleton; Separation; Purification; Stabilisation; Use of additives; Separation; Purification Crystallisation

Recent Application in this class:
#1
20260132101
2026-05-14

METHOD FOR RESOLVING PHENYLALANINE DERIVATIVE, AND INTERMEDIATE

#2
20260132100
2026-05-14

Method for Purifying Pregabalin

#3
20260015312
2026-01-15

NEW CRYSTALLINE FORM OF L-SERINE AND PROCESS OF PREPARING SAME

#4
20250214927
2025-07-03

AN IMPROVED PROCESS FOR PURIFICATION OF ROBENACOXIB

#5
20250179038
2025-06-05

REFINING METHOD

#6
20250129087
2025-04-24

SALT CRYSTALS

#7
20250091981
2025-03-20

PROCESS FOR THE PURIFICATION OF 5-AMINOSALICYLIC ACID

#8
20250034079
2025-01-30

PROCESS FOR RECOVERING AMINOBENZOIC ACID FROM AN AQUEOUS MOTHER LIQUOR

#9
20240425444
2024-12-26

PROCESS FOR PRODUCING CRYSTALLINE L-CARNITINE

#10
20240262784
2024-08-08

METHOD FOR PRODUCING ASPARTIC ACID

#11
20240217920
2024-07-04

PROCESS FOR PRODUCING L-CARNITINE

#12
20240158423
2024-05-16

TWO-COMPARTMENT BIPOLAR MEMBRANE ELECTRODIALYSIS OF SALTS OF AMINO ACIDS

#13
20240140906
2024-05-02

SOLIDIFICATION OF HEXYL 2-[4-(DIETHYLAMINO)-2-HYDROXYBENZOYL]BENZOATE

#14
20240109838
2024-04-04

PROCESS OF MANUFACTURING 2-(4'-DIETHYLAMINO-2'-HYDROXYBENZOYL)BENZOIC ACID HEXYL ESTER

#15
20240025841
2024-01-25

METHOD FOR OBTAINING CRYSTALLINE DIETHYLAMINO HYDROXYBENZOYL HEXYL BENZOATE

#16
20230391713
2023-12-07

PROCESS TO PREPARE A CO GRANULE OF METHYLGLYCINE N,N DIACETIC ACID SALTS EMPLOYING A CRUMBLY PHASE COMPOSITION OF METHYLGLYCINE N,N DIACETIC ACID SALTS

#17
20230365492
2023-11-16

LITHIUM ORGANIC ACID-AMINO ACID SALT, AND CRYSTAL FORM, COMPOSITION AND APPLICATION THEREOF

#18
20230357129
2023-11-09

PROCESS FOR ISOLATING 2-(4'-DIETHYLAMINO-2'-HYDROXYBENZOYL)BENZOIC ACID HEXYL ESTER

#19
20230150957
2023-05-18

REFINING METHOD

#20
20230115605
2023-04-13

CRYSTAL FORM OF AROMATIC VINYL DERIVATIVES, AND PREPARATION METHOD THEREFOR AND USE THEREOF

#21
20230092844
2023-03-23

PROCESS FOR MAKING SOLID METHYLGLYCINE DIACETATE ALKALI METAL SALTS

#22
20220340515
2022-10-27

SOLIDIFICATION OF HEXYL 2-[4-(DIETHYLAMINO)-2-HYDROXYBENZOYL]BENZOATE

#23
20220162155
2022-05-26

L-ORNITHINE PHENYL ACETATE AND METHODS OF MAKING THEREOF

#24
20220002227
2022-01-06

CRYSTALLINE FORMS OF METYROSINE

#25
20210261493
2021-08-26

CRYSTAL OF AMINO ACID SALT OF 3-HYDROXYISOVALERIC ACID AND PRODUCTION METHOD THEREOF

#26
20210206712
2021-07-08

Process for making solid methylglycine diacetate (MGDA) alkali metal salt, and solid particles

#27
20210139413
2021-05-13

Production method for 1-amino cyclopropane carboxylic acid nonhydrate

#28
20210017122
2021-01-21

Separation of basic amino acids

#29
20200239406
2020-07-30

L-ornithine phenyl acetate and methods of making thereof

#30
20200157041
2020-05-21

Process for the separation of long chain amino acids and dibasic acids

#31
20200131455
2020-04-30

Sodium methyl glycine-N,N-diacetic acid compound, process to prepare it and use thereof

#32
20200131115
2020-04-30

Process to prepare a solid composition of an amino acid diacetic acid

#33
20200095189
2020-03-26

Process for making solid methylglycine diacetate (MGDA) alkali metal salt, and solid particles

#34
20190210958
2019-07-11

Crystal of amino acid salt of 3-hydroxyisovaleric acid and production method thereof

#35
20190062266
2019-02-28

Process for purifying long chain amino acids

#36
20190062265
2019-02-28

Process for purifying long chain amino acids

#37
20190047940
2019-02-14

SALTS OF CARNITINE DERIVATIVES AND METHODS OF PRODUCTION

#38
20190022551
2019-01-24

Device for producing particles and method for producing particles

#39
20190010116
2019-01-10

Process for the separation of long chain amino acids and dibasic acids

#40
20190002397
2019-01-03

Process for the separation of long chain amino acids and dibasic acids

#41
20190002396
2019-01-03

Process for the separation of long chain amino acids and dibasic acids

#42
20180370901
2018-12-27

Gamma-aminobutyric acid hemihydrate crystal and preparation method thereof

#43
20180354891
2018-12-13

Process for making a crystalline alkali metal salt of a complexing agent, and crystalline complexing agent

#44
20180319736
2018-11-08

L-ornithine phenyl acetate and methods of making thereof

#45
20180282260
2018-10-04

1-AMINOCYCLOPROPANE-1-CARBOXYLIC ACID POLYMORPHS

#46
20180148424
2018-05-31

Method for producing dicarboxylic acid compound

#47
20180118648
2018-05-03

5-substituted-5-hydroxy-5-aryl-3-oxo-pentanoate derivatives and their enantiopure forms

#48
20180044281
2018-02-15

L-ornithine phenyl acetate and methods of making thereof

#49
20170312795
2017-11-02

Systems with anti-fouling control and methods for controlling fouling within a channel of a plug flow crystallizer

#50
20170298406
2017-10-19

SALT OF PHENYLGLYCINE METHYL ESTER

#51
20170253630
2017-09-07

Method for producing amino acid crystals and method for producing protein crystals

#52
20170233331
2017-08-17

Method for obtaining crystalline L-alanine

#53
20170158613
2017-06-08

Process to crystallize chelating agents

#54
20170158612
2017-06-08

Salts of carnitine derivatives and methods of production

#55
20170081270
2017-03-23

Method for preparing a salt of acetylsalicylic acid and a basic amino acid

#56
20170036991
2017-02-09

Isolation and purification of 6-aminocaproic acid

#57
20160237025
2016-08-18

Process for preparing gabapentin

#58
20160221940
2016-08-04

Crystalline phase of (3S,3S′) 4,4′-disulfanediylbis(3-aminobutane 1-sulfonic acid) with L-lysine

#59
20160221930
2016-08-04

Method for producing a crystalline solid from glycine-N, N-diacetic acid derivatives with sufficiently reduced hygroscopicity

#60
20160058778
2016-03-03

Method of producing therapeutic agent

#61
20150353475
2015-12-10

Crystalline particles of salts of glutamic acid N,N-diacetic acid

#62
20150321995
2015-11-12

Crystalline particles of glutamic acid N,N-diacetic acid

#63
20150274641
2015-10-01

Methods for making polymorphs of bromfenac sodium and bromfenac sodium formulations

#64
20150251990
2015-09-10

L-ornithine phenyl acetate and methods of making thereof

#65
20150218123
2015-08-06

Preparation method for optically active bicyclic gamma-amino acid compound

#66
20150191418
2015-07-09

Preparation of organic compounds for enhanced reactivity

#67
20150183725
2015-07-02

Method of producing basic amino acid or basic amino acid salt

#68
20150166466
2015-06-18

Salts of carnitine derivatives and methods of production

#69
20150126775
2015-05-07

Process for the production of carnitine from β-lactones

#70
20140349115
2014-11-27

Method for the crystallization of 2-(4-N,N-diethyl amino-2-hydroxy-benzoyl)-benzoic acid-n-hexyl ester

#71
20140343289
2014-11-20

Process for producing solid amino acid

#72
20140323719
2014-10-30

Process for the purification of polyaminocarboxylates

#73
20140288327
2014-09-25

L-ornithine phenyl acetate and methods of making thereof

#74
20140256984
2014-09-11

Devices and methods for crystallization

#75
20140228593
2014-08-14

Process for producing amino acid

#76
20140107319
2014-04-17

Method for synthesis of peptide using a carrier

#77
20140018428
2014-01-16

Polymorphs of bromfenac sodium and methods for preparing bromfenac sodium polymorphs

#78
20140011880
2014-01-09

Polymorphs of bromfenac sodium and methods for preparing bromfenac sodium polymorphs

#79
20130289120
2013-10-31

Polymorphs of bromfenac sodium and methods for preparing bromfenac sodium polymorphs

#80
20130261332
2013-10-03

Preparation of organic compounds for enhanced reactivity

#81
20130225539
2013-08-29

METHOD FOR PRODUCING CRYSTALLINE 5-AMINOSALICYLIC ACID

#82
20130090459
2013-04-11

Metal-assisted and microwave-accelerated evaporative crystallization

#83
20130023588
2013-01-24

Polymorphs of bromfenac sodium and methods for preparing bromfenac sodium polymorphs

#84
20120283473
2012-11-08

Process for the preparation of a crystalline L-MGDA trialkali metal salt

#85
20120244204
2012-09-27

Composition for external use and method for producing the same

#86
20120208885
2012-08-16

L-ornithine phenyl acetate and methods of making thereof

#87
20120202731
2012-08-09

Process for the preparation of a powder comprising one or more complexing agent salts

#88
20120149936
2012-06-14

Method for producing a crystalline solid from glycine-N,N-diacetic acid derivatives with sufficiently reduced hygroscopicity

#89
20120059189
2012-03-08

Process for the production of L-carnitine tartrate

#90
20120046494
2012-02-23

Process of preparing an alkylamine derivative

#91
20120046491
2012-02-23

Process for the preparation of a powder comprising one or more derivatives of glycine-N,N diacetic acid and/or one or more derivatives of glutamine-N,N diacetic acid and methylglycine-N,N diacetic acid trisodium salt powder

#92
20120022288
2012-01-26

PROCESS FOR THE PRODUCTION OF CARNITINE FROM BETA-LACTONES

#93
20110288332
2011-11-24

Aminocarboxylate powders with improved purity and flowability properties

#94
20110263896
2011-10-27

Process for enantioseparation of chiral systems with compound formation using two subsequent crystallization steps

#95
20110245536
2011-10-06

PROCESS FOR PREPARING PREGABALIN

#96
20110118503
2011-05-19

Methods for the production of L-carnitine

#97
20110092596
2011-04-21

Polymorphs of bromfenac sodium and methods for preparing bromfenac sodium polymorphs

#98
20100298602
2010-11-25

SYSTEMS AND METHODS FOR MICROFLUIDIC CRYSTALLIZATION

#99
20100280119
2010-11-04

L-ornithine phenyl acetate and methods of making thereof

#100
20100137639
2010-06-03

Preparation of organic compounds for enhanced reactivity

#101
20100137629
2010-06-03

Method for the crystallization of 2-(4-N,N-diethyl amino-2-hydroxy benzoyl)-benzoic acid-N-hexyl ester

#102
20100094048
2010-04-15

Method of producing alpha-form glutamic acid crystals

#103
20100056817
2010-03-04

Process and device for manufacturing organometallic complexes in powder form

#104
20100029904
2010-02-04

Carrier for separation, method for separation of compound, and method for synthesis of peptide using the carrier

#105
20090306421
2009-12-10

Synthesis of substituted hydroxymethyl phenols

#106
20090292138
2009-11-26

Process for the purification of gabapentin

#107
20090253932
2009-10-08

Resolution of Racemic Organic Acids with (1S, 4S)-4[3,4-Dichlorophenyl]-1,2,3,4-Tetrahydro-N-Methyl-1-Naphthaloneamine

#108
20090226524
2009-09-10

Stable active compound complex of salts of o-acetylsalicylic acid with basic amino acids and glycine

#109
20090082594
2009-03-26

Crystals of L-ornithine and process for producing the same

#110
20090036709
2009-02-05

Method for producing 5-aminolevulinic acid hydrochloride

#111
20080103334
2008-05-01

Process For Synthesis Of Gabapentin

#112
20070293700
2007-12-20

Process for the preparation of gabapentin

#113
20060281945
2006-12-14

Method of making a diL-lysine monosulfate trihydrate crystal

#114
20060276544
2006-12-07

Pregabalin free of isobutylglutaric acid and a process for preparation thereof

#115
20060276543
2006-12-07

Crystalline forms of pregabalin

#116
20060235079
2006-10-19

Process for the preparation of Gabapentin form-II

#117
20060135784
2006-06-22

PROCESS FOR PRODUCING 3-AMINO-2-HYDROXYPROPIONIC ACID DERIVATIVES

#118
20060122421
2006-06-08

Crystallization of amino acids using ultrasonic agitation

#119
20060030730
2006-02-09

Purification and production methods of 1-aminocyclopropanecarboxylic acid

#120
20050202095
2005-09-15

Rotor-stator apparatus and process for the formation of particles

#121
20050187295
2005-08-25

Processes for the preparation of gabapentin

#122
20050143586
2005-06-30

Process for producing optically active amino acid derivatives

#123
20050132947
2005-06-23

DiL-lysine monosulfate trihydrate crystal and method of making

#124
20050119503
2005-06-02

Process for preparation of Gabapentin

#125
20050107473
2005-05-19

Process for producing tert-leucine

#126
20050049432
2005-03-03

Process for the preparation of 1-(aminomethyl) cyclohexaneacetic acid

#127
15644645
2018-05-15

Process for the separation of long chain amino acids and dibasic acids