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Chemical Reagents

Chemicals reagents are commonly referred to as reagent. It is a large class of pure chemical substances with various standard purities and can be used for education, scientific research, analysis and testing as well as the functional materials and raw materials required by some kinds of novel industrial materials. There is a large variety of chemical reagents and the number has reached hundreds of thousands in the world. There are also tens of thousands of reagents that have been used in daily life in china.
There is still no uniform international rules in the classification methods for chemicals. It is customary divided by subject and actual application. Take the representative catalog issued by the Germany E • Merck Company as example, there are twelve categories and seventy categories while in most countries, it is divided with the scope of application. We divide the reagents into four categories.

1. General reagents: generally refers to inorganic reagents and organic reagents that can meet standard purity. It is often applied to scientific research, analysis and testing, and synthetic reaction and used as new materials.

2. Analysis Reagents: regent dedicated to analysis and test and can be divided into two subcategories:
(1) Reagents for chemical analysis: testing items for the chemical reaction analysis.
      1) Baseline Reagent: pure compound directly used for the standard solution in the formulation and volumetric analysis.
      2) Indicator: it can be used to indicate the end of the titration reagent and can be classified into pH indicator, redox indicator adsorption indicator, metal indicator, a fluorescent indicator, and so on.
(2) Regents for instrument analysis: high-purity compounds dedicated to instrumental analysis.
       1) Spectroscopically pure reagents: spectroscopically pure compound, often expressed in the SP for spectral analysis reagents.
        2) Chromatography pure reagents: reagents dedicated to analysis of gas chromatography and liquid chromatography analysis.
       3) Deuterated reagents: reagent decided to the analysis of the nuclear resonance instrument.

3. Reagents of electronics industry: special chemical products dedicated to electronics industry.
1)  MOS Reagents: the particle concentration is consistent with ASTM "O" level, being microelectronics dedicated reagent.
2)  high-purity reagents: also known as ultra high purity reagents such as purity of 99.99%, called 4N, 99.999% referred to 5N. They are generally used for scientific research and physical and chemical trace analysis, fiber-optic communications, microelectronics, semiconductors, lasers and so on.
3)  In addition, there are also optically pure reagents, photoresist and other kinds of fine chemical products of special properties.

4. Biochemical reagents: they are basic chemical substances extracted from living organisms or chemically synthesized and is a large type of reagent as important reagents for biological component research and analysis and identification including clinical immunology reagents, genetic engineering reagent, cell culture reagents, hormone-type substances, reagent for poison carcinogenic research and reagent for anti-mold and insecticide research. In short, they are reagents for scientific research such as exploring the mysteries of life and disease prevention as well as testing agents, being pure compound related to medicine and pharmacology.

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Structure Chemical Name CAS MF
1-(2-Tetrahydropyranyl)-1H-pyrazole-4-boronic acid pinacol ester 1-(2-Tetrahydropyranyl)-1H-pyrazole-4-boronic acid pinacol ester 1003846-21-6 C14H23BN2O3
2-Propoxypyridine-5-boronic acid 2-Propoxypyridine-5-boronic acid 1150114-50-3 C8H12BNO3
3-Cyano-5-methoxyphenylboronic acid,pinacol ester 3-Cyano-5-methoxyphenylboronic acid,pinacol ester 1035266-33-1 C14H18BNO3
[6-(4-METHYLPIPERAZIN-1-YL)PYRIDIN-3-YL]BORONIC ACID [6-(4-METHYLPIPERAZIN-1-YL)PYRIDIN-3-YL]BORONIC ACID 936353-84-3 C10H16BN3O2
6-dimethylamino-4-methyl-pyridineboronic acid 6-dimethylamino-4-methyl-pyridineboronic acid 535934-70-4 C8H13BN2O2
4-tert-Butoxystyrene 4-tert-Butoxystyrene 95418-58-9 C12H16O
3-BROMOBENZENEBORONIC ACID N-METHYLDIETHANOLAMINE ESTER 3-BROMOBENZENEBORONIC ACID N-METHYLDIETHANOLAMINE ESTER 374538-00-8 C11H15BBrNO2
(4-CHLORO-3-HYDROXYPHENYL)BORONIC ACID (4-CHLORO-3-HYDROXYPHENYL)BORONIC ACID 915201-06-8 C6H6BClO3
2,2'-BITHIOPHENE-5,5'-DIBORONIC ACID 2,2'-BITHIOPHENE-5,5'-DIBORONIC ACID 189358-30-3 C8H8B2O4S2
6-Methoxycarbonylindole-2-boronic acid pinacol ester 6-Methoxycarbonylindole-2-boronic acid pinacol ester 1256359-21-3 C16H20BNO4
Methyl 2-amino-4-((tert-butoxycarbonyl)amino)benzoate Methyl 2-amino-4-((tert-butoxycarbonyl)amino)benzoate 849792-91-2 C13H18N2O4
1,6-Dimethyl-1H-indazole-4-boronic acid 1,6-Dimethyl-1H-indazole-4-boronic acid 1310405-32-3 C9H11BN2O2
1,3-Dimethyl-1H-indazole-7-boronic acid 1,3-Dimethyl-1H-indazole-7-boronic acid 1309982-19-1 C9H11BN2O2
2,5-Difluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 2,5-Difluoro-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine 1256358-86-7 C11H14BF2NO2
(5-CYANO-1-BENZOFURAN-2-YL)BORONIC ACID (5-CYANO-1-BENZOFURAN-2-YL)BORONIC ACID 331833-83-1 C9H6BNO3
4-(2-CyanophenylMethoxy)phenylboronic acid 4-(2-CyanophenylMethoxy)phenylboronic acid 1256358-43-6 C14H12BNO3
4-(3-chlorophenoxyMethyl)phenylboronic acid 4-(3-chlorophenoxyMethyl)phenylboronic acid 1256358-75-4 C13H12BClO3
1-BroMo-2,3-dichlorobenzene-d3 1-BroMo-2,3-dichlorobenzene-d3 1219805-59-0 C6BrCl2D3
[4,6-Dihydroxy-5-[3-(triethoxysilyl)propyl]-1,3-phenylene]bis[phenylmethanone] [4,6-Dihydroxy-5-[3-(triethoxysilyl)propyl]-1,3-phenylene]bis[phenylmethanone] 166255-23-8 C29H34O7Si
2-[4,6-Bis([1,1'-biphenyl]-4-yl)-1,3,5-triazin-2-yl]-5-[(2-ethylhexyl)oxy]phenol 2-[4,6-Bis([1,1'-biphenyl]-4-yl)-1,3,5-triazin-2-yl]-5-[(2-ethylhexyl)oxy]phenol 204583-39-1 C41H39N3O2
2-Morpholinopyridine-4-boronic acid, pinacol ester 2-Morpholinopyridine-4-boronic acid, pinacol ester 888721-86-6 C15H23BN2O3
Tetraethylammonium fluoride dihydrate Tetraethylammonium fluoride dihydrate 665-46-3 C8H24FNO2
AMMONIUM CHLORIDE-15N AMMONIUM CHLORIDE-15N 39466-62-1 ClH4N
Z-5-DECEN-1-YL ACETATE Z-5-DECEN-1-YL ACETATE 67446-07-5 C12H22O2
Methyl 4-amino-3-methoxybenzoate Methyl 4-amino-3-methoxybenzoate 41608-64-4 C9H11NO3
1H-Indole-1-carboxylic acid, 2-borono-4-fluoro-, 1-(1,1-dimethylethyl) ester 1H-Indole-1-carboxylic acid, 2-borono-4-fluoro-, 1-(1,1-dimethylethyl) ester 1000068-25-6 C13H15BFNO4
Ethyl 3-oxo-4-phenylbutanoate Ethyl 3-oxo-4-phenylbutanoate 718-08-1 C12H14O3
2-PHENYLTHIOPHENE-5-BORONIC ACID PINACOL ESTER 2-PHENYLTHIOPHENE-5-BORONIC ACID PINACOL ESTER 459409-74-6 C16H19BO2S
2-(6-Methyl-4,8-dioxo-1,3,6,2-dioxazaborocan-2-yl)benzaldehyde 2-(6-Methyl-4,8-dioxo-1,3,6,2-dioxazaborocan-2-yl)benzaldehyde 1257651-51-6 C12H12BNO5
2-(Benzofuran-2-yl)-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione,  2-Benzofuranboronic  acid  MIDA  ester 2-(Benzofuran-2-yl)-6-methyl-1,3,6,2-dioxazaborocane-4,8-dione, 2-Benzofuranboronic acid MIDA ester 1104637-65-1 C13H12BNO5
2,3,5,6-TETRAMETHYLPHENYLBORONIC ACID 2,3,5,6-TETRAMETHYLPHENYLBORONIC ACID 197223-36-2 C10H15BO2
2-Octen-1-ylsuccinic  anhydride,  mixture  of  cis  and  trans 2-Octen-1-ylsuccinic anhydride, mixture of cis and trans 42482-06-4 C12H18O3
Hexanedioic acid dihexyl ester Hexanedioic acid dihexyl ester 110-33-8 C18H34O4
PRL-8-53 PRL-8-53 51352-87-5 C18H22ClNO2
2-(phenyl-d5)-9H-carbazole-1,3,4,5,6,7,8-d7 2-(phenyl-d5)-9H-carbazole-1,3,4,5,6,7,8-d7 2907762-28-9
4'-(trifluoroMethyl)biphenyl-3-ylboronic acid 4'-(trifluoroMethyl)biphenyl-3-ylboronic acid 1107603-45-1 C13H10BF3O2
3-(Tetrahydropyran-2-yloxy)phenylboronic acid 3-(Tetrahydropyran-2-yloxy)phenylboronic acid 1287777-05-2 C11H15BO4
2-Methoxy-d3-aniline--d4 2-Methoxy-d3-aniline--d4 1219803-70-9 C7H9NO
2-Methyl-d3-propyl--d4 Alcohol 2-Methyl-d3-propyl--d4 Alcohol 1219804-53-1 C4H3D7O
4-BroMoanisole-d3 4-BroMoanisole-d3 100835-59-4 C7H4BrD3O
4-Hydroxypiperidine--d5 4-Hydroxypiperidine--d5 1219799-35-5 C5H11NO
p-Octylbenzenesulfonic acid p-Octylbenzenesulfonic acid 17012-98-5 C14H22O3S
Methyl 5-(4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)furan-3-carboxylate Methyl 5-(4,4,5,5-tetraMethyl-1,3,2-dioxaborolan-2-yl)furan-3-carboxylate 676501-87-4 C12H17BO5
3-Cyano-5-fluorobenzeneboronic acid pinacol ester, 96% 3-Cyano-5-fluorobenzeneboronic acid pinacol ester, 96% 935685-88-4 C13H15BFNO2
3-Fluoro-2-(trifluoroMethyl)benzeneboronic acid pinacol ester, 96% 3-Fluoro-2-(trifluoroMethyl)benzeneboronic acid pinacol ester, 96% 1192548-05-2 C13H15BF4O2
Dapagliflozin-d5 Dapagliflozin-d5 1204219-80-6 C21H20ClD5O6
(6-(4-Methylpiperidin-1-yl)pyridin-3-yl)boronic acid (6-(4-Methylpiperidin-1-yl)pyridin-3-yl)boronic acid 1864801-70-6 C11H17BN2O2
4-((tert-butoxycarbonyl(Methyl)aMino)Methyl)phenylboronic acid 4-((tert-butoxycarbonyl(Methyl)aMino)Methyl)phenylboronic acid 1287753-35-8 C13H20BNO4
1-BroMo-N-phenylcarbazole 1-BroMo-N-phenylcarbazole 1333002-37-1 C18H12BrN
(3S)-4-Chloro-3-[(triMethylsilyl)oxy]butanenitrile (3S)-4-Chloro-3-[(triMethylsilyl)oxy]butanenitrile 727382-14-1 C7H14ClNOSi
6-(2-AMINO-4-THIAZOLYL)PYRIDINE-3-BORONIC ACID PINACOL ESTER 6-(2-AMINO-4-THIAZOLYL)PYRIDINE-3-BORONIC ACID PINACOL ESTER 1402174-14-4 C14H20BN3O3S
2-(2-fluorophenylthio)-5-(Methylsulfonyl)aniline 2-(2-fluorophenylthio)-5-(Methylsulfonyl)aniline 129846-94-2 C13H12FNO2S2
Triethy benzyl ammonium tribromide Triethy benzyl ammonium tribromide 120379-52-4 C19H34Br3N
CTX0294885 CTX0294885 1439934-41-4 C22H24ClN7O
2,4-dibromo-1-chlorobenzene-3,5,6-d3 2,4-dibromo-1-chlorobenzene-3,5,6-d3 2697162-37-9 C6Br2ClD3
Triazine Triazine C3H3N3
1,3,2-Dioxaborolane, 4,4,5,5-tetramethyl-2-[3-(spiro[cyclohexane-1,9'-[9H]fluoren]-2'-yl)phenyl]- 1,3,2-Dioxaborolane, 4,4,5,5-tetramethyl-2-[3-(spiro[cyclohexane-1,9'-[9H]fluoren]-2'-yl)phenyl]- 2757253-64-6 C30H33BO2
2-Octyn-1,1-d2-1-ol 2-Octyn-1,1-d2-1-ol 144401-62-7 C8H14O
1,3-dibromo-2-(methyl-d3)benzene-4,5,6-d3 1,3-dibromo-2-(methyl-d3)benzene-4,5,6-d3 2600398-85-2 C7Br2D6
Benzene-1,3,5-d3, 2-bromo-4-fluoro-6-(methyl-d3)- Benzene-1,3,5-d3, 2-bromo-4-fluoro-6-(methyl-d3)- 2256714-34-6 C7H6BrF
Benzene, 1-bromo-2-(methyl-d2)- (9CI) Benzene, 1-bromo-2-(methyl-d2)- (9CI) 54321-64-1 C7H7Br
Cyclopenta[c]pyrrole-2(1H)-carboxylic acid, hexahydro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-, 1,1-dimethylethyl ester Cyclopenta[c]pyrrole-2(1H)-carboxylic acid, hexahydro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-, 1,1-dimethylethyl ester 2562383-39-3 C18H32BNO4
Boronic acid, B-[3-(3-hydroxy-1-pyrrolidinyl)phenyl]- Boronic acid, B-[3-(3-hydroxy-1-pyrrolidinyl)phenyl]- 2225152-99-6 C10H14BNO3
(2-fluoro-3-(methyl-d3)phenyl-4,5,6-d3)boronic acid (2-fluoro-3-(methyl-d3)phenyl-4,5,6-d3)boronic acid 2819702-12-8 C7H8BFO2
2-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzen-3,5,6-d3-amine 2-fluoro-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzen-3,5,6-d3-amine 2819702-18-4 C12H17BFNO2
2-fluoro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzen-3,4,5-d3-amine 2-fluoro-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzen-3,4,5-d3-amine 2819703-60-9 C12H17BFNO2
2,4a,6a,6b,9,9,12a-heptamethyl-10,13-dioxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13,14b-icosahydropicene-2-carboxylic-11,11-d2 acid 2,4a,6a,6b,9,9,12a-heptamethyl-10,13-dioxo-1,2,3,4,4a,5,6,6a,6b,7,8,8a,9,10,11,12,12a,12b,13,14b-icosahydropicene-2-carboxylic-11,11-d2 acid 2819705-48-9 C30H44O4
4-(methyl-d3)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrole-3,5-d2 4-(methyl-d3)-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrrole-3,5-d2 2819705-22-9 C11H18BNO2
5-bromo-4-cyclopropyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile 5-bromo-4-cyclopropyl-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile 2819707-45-2 C16H19BBrNO2
methyl 2-cyano-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate methyl 2-cyano-4-methyl-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate 2819707-65-6 C16H20BNO4
4-(Di-Boc-amino)pyridine-2-boronic acid pinacol ester 4-(Di-Boc-amino)pyridine-2-boronic acid pinacol ester 2819707-69-0 C21H33BN2O6
methyl 3-chloro-4-cyano-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate methyl 3-chloro-4-cyano-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoate 2819707-84-9 C15H17BClNO4
2-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4-(trifluoromethyl)benzonitrile 2-methyl-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-4-(trifluoromethyl)benzonitrile 2819707-89-4 C15H17BF3NO2
5-chloro-4-methoxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile 5-chloro-4-methoxy-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile 2819708-04-6 C14H17BClNO3
3-chloro-4-methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile 3-chloro-4-methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile 2819708-09-1 C14H17BClNO3
4-chloro-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5-(trifluoromethyl)benzonitrile 4-chloro-2-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5-(trifluoromethyl)benzonitrile 2819708-24-0 C14H14BClF3NO2
3-cyclopropyl-4-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile 3-cyclopropyl-4-fluoro-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile 2819708-37-5 C16H19BFNO2
2-cyclopropyl-4-methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile 2-cyclopropyl-4-methoxy-5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzonitrile 2819708-42-2 C17H22BNO3
methyl 2-cyclopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5-(trifluoromethyl)benzoate methyl 2-cyclopropyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-5-(trifluoromethyl)benzoate 2819708-57-9 C18H22BF3O4
2-(4-cyclopropyl-5-methoxy-2-(trifluoromethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2-(4-cyclopropyl-5-methoxy-2-(trifluoromethyl)phenyl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2819708-62-6 C17H22BF3O3
bis(methyl-d3)(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)phosphine oxide bis(methyl-d3)(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)phosphine oxide 2819705-27-4 C14H22BO3P
Phen-2,4,6-d3-ol, 3-amino- (9CI) Phen-2,4,6-d3-ol, 3-amino- (9CI) 124286-13-1 C6H7NO
Glycidic acid methyl ester Glycidic acid methyl ester 4538-50-5 C4H6O3
5-METHYL-D3-CYTOSINE-6-D1 5-METHYL-D3-CYTOSINE-6-D1 1219795-15-9 C5H3D4N3O
methyl 4-(trifluoromethyl)benzoate-2,3,5,6-d4 methyl 4-(trifluoromethyl)benzoate-2,3,5,6-d4 2768655-23-6 C9H3D4F3O2
Benzoic acid, 4-(methyl-d3)-, methyl ester (9CI) Benzoic acid, 4-(methyl-d3)-, methyl ester (9CI) 749874-46-2 C9H10O2
Cyclopropane-1,2,2,3,3-d5-methanol Cyclopropane-1,2,2,3,3-d5-methanol 2256739-96-3 C4H3D5O
2-[2-Chloro-5-(3-oxetanyl)phenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2-[2-Chloro-5-(3-oxetanyl)phenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2223055-55-6 C15H20BClO3
2-[4-Chloro-3-(3-oxetanyl)phenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2-[4-Chloro-3-(3-oxetanyl)phenyl]-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 2223044-23-1 C15H20BClO3
B-[3-(4-Thiazolyl)phenyl]boronic acid B-[3-(4-Thiazolyl)phenyl]boronic acid 2225172-73-4 C9H8BNO2S
2-Amino-5-fluoropyridine-d3 2-Amino-5-fluoropyridine-d3 2460490-12-2 C5H2D3FN2
Pyridine, 2-methyl-4-[3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]- Pyridine, 2-methyl-4-[3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]- 2223051-17-8 C16H22BN3O2
Pyridine, 2-methyl-4-[3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]- Pyridine, 2-methyl-4-[3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazol-1-yl]- 2223027-65-2 C15H20BN3O2
5-tetradecyloxolan-2-one 5-tetradecyloxolan-2-one 502-26-1 C18H34O2
N-Methoxy-N-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide N-Methoxy-N-methyl-3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzamide 957061-17-5 C15H22BNO4
4-CYANO-BIPHENYLBORIC ACID 4-CYANO-BIPHENYLBORIC ACID 406482-73-3 C13H10BNO2
1-BROMO-3-CHLORO-2-FLUOROBENZENE 1-BROMO-3-CHLORO-2-FLUOROBENZENE 144584-65-6 C6H3BrClF
BUTYL TRIMETHYLAMMONIUM BROMIDE BUTYL TRIMETHYLAMMONIUM BROMIDE 2650-51-3 C7H18N.Br
4-(METHOXYCARBONYL)-6-METHYLPYRIDINE-2-BORONIC ACID PINACOL ESTER 4-(METHOXYCARBONYL)-6-METHYLPYRIDINE-2-BORONIC ACID PINACOL ESTER 1309982-35-1 C14H20BNO4
(R)-(+)-Verapamilic Acid (R)-(+)-Verapamilic Acid 38175-99-4 C16H21NO4
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