Methylpyridine

Methylpyridine is the homologue of the pyridine. Pyridine belongs to aromatic hydrocarbon as well as six-membered ring. It is similar to benzene in some aspects but is also different from benzene in some aspects, e.g., there are non-isomers for toluene while there are three kinds of methylpyridine isomers, i.e., 2-methylpyridine [1], 3-methylpyridine [2] and 4-methylpyridine [3]. It has a relative molecular mass being 93.13. It is naturally presented in coal tar and is chemically active and can be subject to substitution on the nitrogen atom as well as oxidation on the side chain or condensation reaction with aldehydes and ketones under the catalysis of the alkaline.

[1] is also known as α- methyl pyridine, α- picoline. It is colorless liquid.
It has a strong irritating odor with a relative density of 0.9462, Melting point of -66.8 ℃, and boiling point of 128.8 ℃. It has a refractive index of 1.4957 and a flash point of 26 ℃. It can be dissolved in water and acetone and miscible with ethanol and ether. It is capable to forming an azeotropic mixture with water with the product content of 52% and azeotropic point of 93.5 ℃. Rat subjecting to oral administration have a LD50 of 1410 mg / kg.
Purpose: it can be used as the raw material for the production of 2-vinyl pyridine; pesticide raw materials, production of "fenchlorazole", "pyridine-2,5-dimethyl ester," " dipropyl pyridine-2, 5- dicarboxylate", "chloro pyridine", "Peacock dioxide morpholine acid "," 2-pyridyl oxime methyl iodide, "" picloram pyridine "and so on.

[2] is also known as β-picoline, β-picoline. It appears as transparent colorless liquid with irritating foul smell and slightly sweet flavor. It has a relative density of 0.9560, 0.9613 (15 ℃), melting point of -18.3 ℃, boiling point of 143.9 ℃, the refractive index of 1.5403 and a flash point of 36 ℃ (closed). It is miscible with water, ethanol and ether. This product can form an azeotropic mixture with water with the product content being 27% and azeotropic point of 96.7 ℃. This product is different from [1] and [3] with a poor methylation reactivity. It has a stimulating effect on the skin, and can also be absorbed through the skin with its vapor irritating the eyes and respiratory tract, causing inflammation, causing severe blisters, vomiting, headache and other symptoms. Rat subjecting to oral administration has a LD50 of 790mg / kg.
Applications: pesticide raw materials, production of herbicides, insecticides, germicides such as "nornicotine", "parinol" and rodenticides " 1-nitrophenyl-3-(3-pyridylmethyl)-ure" and so on; food additives; during the meat processing, addition of 2-methylpyridine which can bind to Myoglobin, can prevent oxidation and maintain the freshness of the meat; addition of [2] to the bread, cakes, rice products, dairy products, ham and sausages and other foods, can play a role of enhanced vitamin to be applied to medicine for substituting the function of vitamin B; as vitamin supplements, it can be supplemented to infant formula milk powder as well as milk powder, food and beverages of pregnant women; it can also be used as medicine for the treatment of niacin deficiency; it can be used as feed additives; it can be applied to the production of tobacco amide or replacement of nicotinamide; alcohol modifying agent; dye intermediates as well as the raw materials of rubber vulcanization agent and film sensitizing agent.

[3] is also known as γ- picoline and γ- picoline. It appears as colorless liquid and is flammable. It has unpleasant odor but a sweet taste. If contaminated with impurities, the color will gradually turn yellow. It has a relative density of 0.9558, melting point of 3.7 ℃, and boiling point 144.9 ℃. It has a refractive index of 1.5064 (17 ℃) and a flash point of 56 ℃. It can be dissolved in water, ethanol and ether. This product can form an azeotropic mixture with water with the product content of 63.5% and azeotropic point 97.4 ℃. It is irritating to the skin, eyes and mucous membrane. Because of its stench, even at a concentration of 1 × 10-6, its smell can also be felt which can facilitate early prevention. After the poisoning, there will be feeling of nausea, vomiting, headache with causing internal organs and central nervous system diseases in severe cases. Rat subjecting to oral administration has a LD50 of 1290mg / kg.

Applications: pharmaceutical raw materials for production of anti-tuberculosis drugs "isoniazid" antidepressants "nialamide," antidote "obidoxime chloride "; pesticide raw materials for production of pesticides and herbicides; it also used in dyes, rubber additive agent, waterproof fabric, resin curing agent; it is also the raw materials for nicotinaldehyde, 2-amino-4-methylpyridine (veterinary), pyridine-4-carboxylic acid (anticoagulant).

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Structure Chemical Name CAS MF
3-Methylpyridine-4-sulfonic acid 3-Methylpyridine-4-sulfonic acid 14045-23-9 C6H7NO3S
1-(3-METHYLPYRIDIN-2-YL)PIPERAZINE 1-(3-METHYLPYRIDIN-2-YL)PIPERAZINE 111960-11-3 C10H15N3
5-IODO-4-METHYL-PYRIDIN-2-YLAMINE 5-IODO-4-METHYL-PYRIDIN-2-YLAMINE 356561-08-5 C6H7IN2
2,5-DIAMINO-3-PICOLINE, 2,5-DIAMINO-3-PICOLINE, 106070-58-0 C6H9N3
1-N-HEXADECYL-4-METHYLPYRIDINIUM CHLORIDE HYDRATE 1-N-HEXADECYL-4-METHYLPYRIDINIUM CHLORIDE HYDRATE 13106-53-1 C22H42ClNO
2-NITRO-5-METHYLPYRIDINE 2-NITRO-5-METHYLPYRIDINE 1074-38-0 C6H6N2O2
2-AMINO-3-BROMO-4-METHYLPYRIDINE 2-AMINO-3-BROMO-4-METHYLPYRIDINE 40073-38-9 C6H7BrN2
N-FLUORO-4,6-DIMETHYLPYRIDINIUM-2-SULFONATE N-FLUORO-4,6-DIMETHYLPYRIDINIUM-2-SULFONATE 147541-01-3 C7H8FNO3S
2-Hydroxymethyl-3-methyl-4-(3-methoxy propanoxyl)pyridine 2-Hydroxymethyl-3-methyl-4-(3-methoxy propanoxyl)pyridine 118175-10-3 C11H17NO3
2-Chloro-4,6-dimethyl-3-pyridinecarboxylic acid 2-Chloro-4,6-dimethyl-3-pyridinecarboxylic acid 66662-48-4 C8H8ClNO2
3,5-Dichloro-4-Picoline 3,5-Dichloro-4-Picoline 100868-46-0 C6H5Cl2N
DIMETHYL-PYRIDIN-3-YL-AMINE DIMETHYL-PYRIDIN-3-YL-AMINE 18437-57-5 C7H10N2
2-AMINO-5,6-DIMETHYLPYRIDINE 2-AMINO-5,6-DIMETHYLPYRIDINE 57963-08-3 C7H10N2
N-FLUORO-4-METHYLPYRIDINIUM-2-SULFONATE N-FLUORO-4-METHYLPYRIDINIUM-2-SULFONATE 147540-88-3 C6H6FNO3S
2-HYDROXYMETHYL-3-METHYLPYRIDINE 2-HYDROXYMETHYL-3-METHYLPYRIDINE 63071-09-0 C7H9NO
N-BOC-3-AMINOMETHYLPYRIDINE  97 N-BOC-3-AMINOMETHYLPYRIDINE 97 102297-41-6 C11H16N2O2
4-AMINO-5-BROMO-2-METHYLPYRIDINE 4-AMINO-5-BROMO-2-METHYLPYRIDINE 10460-50-1 C6H7BrN2
2,6-Dibromo-4-methylpyridine 2,6-Dibromo-4-methylpyridine 73112-16-0 C6H5Br2N
5-BROMO-4-METHYL-PYRIDINE-2,3-DIAMINE 5-BROMO-4-METHYL-PYRIDINE-2,3-DIAMINE 41230-93-7 C6H8BrN3
2,3-DIBROMO-5-(TRIFLUOROMETHYL)PYRIDINE 2,3-DIBROMO-5-(TRIFLUOROMETHYL)PYRIDINE 79623-38-4 C6H2Br2F3N
4-(4,4-DIMETHYL-PIPERIDIN-1-YL)-BENZOIC ACID 4-(4,4-DIMETHYL-PIPERIDIN-1-YL)-BENZOIC ACID 406233-26-9 C14H19NO2
5-bromo-6-methyl-3-nitropyridin-2-amine 5-bromo-6-methyl-3-nitropyridin-2-amine 68957-50-6 C6H6BrN3O2
(3-TRIFLUOROMETHYL-PYRIDIN-2-YL) METHANOL (3-TRIFLUOROMETHYL-PYRIDIN-2-YL) METHANOL 131747-44-9 C7H6F3NO
2-Chloro-3,5-dibromo-4-methylpyridine 2-Chloro-3,5-dibromo-4-methylpyridine 1000017-92-4 C6H4Br2ClN
3-Pyridinecarboxylicacid,2-amino-5-methyl-(9CI) 3-Pyridinecarboxylicacid,2-amino-5-methyl-(9CI) 532440-94-1 C7H8N2O2
5-Trifluoromethyl-pyridin-3-ylamine 5-Trifluoromethyl-pyridin-3-ylamine 112110-07-3 C6H5F3N2
3-(CHLOROMETHYL)PYRIDINE 3-(CHLOROMETHYL)PYRIDINE 3099-31-8 C6H6ClN
4-NITRO-2,3,5-TRIMETHYLPYRIDINE-N-OXIDE 4-NITRO-2,3,5-TRIMETHYLPYRIDINE-N-OXIDE 86604-79-7 C8H10N2O3
4-[4-CHLORO-3-(TRIFLUOROMETHYL)PHENYL]-3-THIOSEMICARBAZIDE 4-[4-CHLORO-3-(TRIFLUOROMETHYL)PHENYL]-3-THIOSEMICARBAZIDE 38901-30-3 C8H7ClF3N3S
4-BROMO-1-METHYLPYRIDIN-2(1H)-ONE 4-BROMO-1-METHYLPYRIDIN-2(1H)-ONE 214342-63-9 C6H6BrNO
2-Bromo-3,5-dimethylpyridine 2-Bromo-3,5-dimethylpyridine 92992-85-3 C7H8BrN
2,6-DIMETHYL-PYRIDINE-3-CARBALDEHYDE 2,6-DIMETHYL-PYRIDINE-3-CARBALDEHYDE 650141-20-1 C8H9NO
2-METHOXY-4-METHYL-PYRIDINE-5-BORONIC ACID 2-METHOXY-4-METHYL-PYRIDINE-5-BORONIC ACID 503184-35-8 C7H10BNO3
3,5-DIBROMO-2,4,6-TRIMETHYLPYRIDINE 3,5-DIBROMO-2,4,6-TRIMETHYLPYRIDINE 29976-56-5 C8H9Br2N
2-MERCAPTO-6-THIEN-2-YL-4-(TRIFLUOROMETHYL)-PYRIDINE-3-CARBONITRILE 2-MERCAPTO-6-THIEN-2-YL-4-(TRIFLUOROMETHYL)-PYRIDINE-3-CARBONITRILE 104960-50-1 C11H5F3N2S2
METHYL-6-HYDROXYMETHYL-2-CARBOXYLATE PYRIDINE METHYL-6-HYDROXYMETHYL-2-CARBOXYLATE PYRIDINE 39977-44-1 C8H9NO3
2-Chloro-3-Nitro-6-Trifluoromethyl Pyridine 2-Chloro-3-Nitro-6-Trifluoromethyl Pyridine 117519-08-1 C6H2ClF3N2O2
2-Methoxy-4-trifluoromethyl-pyridine 2-Methoxy-4-trifluoromethyl-pyridine 219715-34-1 C7H6F3NO
1-(3-METHYL-PYRIDIN-2-YL)-[1,4]DIAZEPANE 1-(3-METHYL-PYRIDIN-2-YL)-[1,4]DIAZEPANE 880362-05-0 C11H17N3
6-Chloro-3-(trifluoromethyl)pyridine-2-carboxylic acid 6-Chloro-3-(trifluoromethyl)pyridine-2-carboxylic acid 796090-24-9 C7H3ClF3NO2
4-Methyl-3-pyridinecarboxamide 4-Methyl-3-pyridinecarboxamide 7250-52-4 C7H8N2O
3-Bromo-2-methoxy-5-trifluoromethylpyridine 3-Bromo-2-methoxy-5-trifluoromethylpyridine 124432-63-9 C7H5BrF3NO
3-Methylpicolinamide 3-Methylpicolinamide 937648-82-3 C7H8N2O
4-Chloro-6-methylpyridine-2-carboxylic acid 4-Chloro-6-methylpyridine-2-carboxylic acid 30235-19-9 C7H6ClNO2
2-AMINO-5-BROMO-3,4-DIMETHYLPYRIDINE 2-AMINO-5-BROMO-3,4-DIMETHYLPYRIDINE 374537-97-0 C7H9BrN2
(4-METHYLPYRIDIN-2-YL)METHYLAMINE (4-METHYLPYRIDIN-2-YL)METHYLAMINE 129768-95-2 C7H10N2
2,2,6,6-TETRAMETHYLPIPERIDINE-1-OXYL-4-AMINO-4-CARBOXYLIC ACID 2,2,6,6-TETRAMETHYLPIPERIDINE-1-OXYL-4-AMINO-4-CARBOXYLIC ACID 15871-57-5 C10H19N2O3*
1-[5-(TRIFLUOROMETHYL)PYRID-2-YL]-1,4-DIAZEPANE 1-[5-(TRIFLUOROMETHYL)PYRID-2-YL]-1,4-DIAZEPANE 306934-70-3 C11H14F3N3
2-BROMO-3-IODO-4-PICOLINE 2-BROMO-3-IODO-4-PICOLINE 88494-42-2 C6H5BrIN
2,5-DICHLORO-3-HYDROXYMETHYLPYRIDINE 2,5-DICHLORO-3-HYDROXYMETHYLPYRIDINE 558465-93-3 C6H5Cl2NO
4-FLUORO-3-PICOLINE 4-FLUORO-3-PICOLINE 28489-28-3 C6H6FN
5-AMINO-3-BROMO-2-METHYLPYRIDINE 5-AMINO-3-BROMO-2-METHYLPYRIDINE 186593-43-1 C6H7BrN2
6-chloromethyl-2-methylpyridinium chloride 6-chloromethyl-2-methylpyridinium chloride 3099-30-7 C7H9Cl2N
2-CHLORO-3-METHYLPYRIDINE-5-BORONIC ACID PINACOL ESTER 2-CHLORO-3-METHYLPYRIDINE-5-BORONIC ACID PINACOL ESTER 1010101-07-1 C12H17BClNO2
5-(bromomethyl)-2-(trifluoromethyl)pyridine 5-(bromomethyl)-2-(trifluoromethyl)pyridine 108274-33-5 C7H5BrF3N
4-METHYLNICOTINALDEHYDE 4-METHYLNICOTINALDEHYDE 51227-28-2 C7H7NO
5-CHLORO-2-FLUORO-4-PICOLINE 5-CHLORO-2-FLUORO-4-PICOLINE 884494-88-6 C6H5ClFN
BIS(2,4,6-TRIMETHYLPYRIDINE)BROMONIUM HEXAFLUOROPHOSPHATE BIS(2,4,6-TRIMETHYLPYRIDINE)BROMONIUM HEXAFLUOROPHOSPHATE 188944-77-6 C16H22BrF6N2P
METHYL PICOLINIMIDATE METHYL PICOLINIMIDATE 19547-38-7 C7H8N2O
4-CYANO-2-METHYLPYRIDINE 4-CYANO-2-METHYLPYRIDINE 2214-53-1 C7H6N2
1-(6-METHYLPYRID-2-YL)PIPERAZINE 1-(6-METHYLPYRID-2-YL)PIPERAZINE 55745-89-6 C10H15N3
2,3,6-TRIMETHYLPYRIDINE 2,3,6-TRIMETHYLPYRIDINE 1462-84-6 C8H11N
2-BROMO-5-IODO-3-METHYLPYRIDINE 2-BROMO-5-IODO-3-METHYLPYRIDINE 65550-78-9 C6H5BrIN
3,5-Dibromo-2-fluoro-4-methylpyridine 3,5-Dibromo-2-fluoro-4-methylpyridine 1000340-01-1 C6H4Br2FN
3-Methylpyridine-4-boronic acid 3-Methylpyridine-4-boronic acid 894808-72-1 C6H8BNO2
2-FLUORO-5-METHYLPYRIDINE-3-BORONIC ACID 2-FLUORO-5-METHYLPYRIDINE-3-BORONIC ACID 1072952-45-4 C6H7BFNO2
1-N-BOC-4-(3-AMINOMETHYLPYRIDYL)PIPERIDINE 1-N-BOC-4-(3-AMINOMETHYLPYRIDYL)PIPERIDINE 206274-21-7 C16H25N3O2
2,5-DICHLORO-4-METHYLPYRIDINE 2,5-DICHLORO-4-METHYLPYRIDINE 886365-00-0 C6H5Cl2N
2-CHLORO-5-IODO-3-(TRIFLUOROMETHYL)-PYRIDINONE 2-CHLORO-5-IODO-3-(TRIFLUOROMETHYL)-PYRIDINONE 887707-25-7 C6H2ClF3IN
3-CHLORO-5-(TRIFLUOROMETHYL)PYRIDINE-2-CARBOXALDEHYDE 3-CHLORO-5-(TRIFLUOROMETHYL)PYRIDINE-2-CARBOXALDEHYDE 175277-50-6 C7H3ClF3NO
3-BROMO-5-METHYLPYRIDINE-4-CARBOXALDEHYDE 3-BROMO-5-METHYLPYRIDINE-4-CARBOXALDEHYDE 203569-15-7 C7H6BrNO
2-(AMINOCARBONYL)NICOTINIC ACID 2-(AMINOCARBONYL)NICOTINIC ACID 5860-70-8 C7H6N2O3
2-(4-NITROPHENOXY)-3-CHLORO-5-TRIFLUOROMETHYL PYRIDINE 2-(4-NITROPHENOXY)-3-CHLORO-5-TRIFLUOROMETHYL PYRIDINE 91618-22-3 C12H6ClF3N2O3
2-(1,3-DIOXOLAN-2-YL)-6-METHYLPYRIDINE 2-(1,3-DIOXOLAN-2-YL)-6-METHYLPYRIDINE 92765-75-8 C9H11NO2
2-ACETAMIDO-5-FLUORO-4-PICOLINE 2-ACETAMIDO-5-FLUORO-4-PICOLINE 475060-21-0 C8H9FN2O
N-BOC-2-AMINOMETHYLPYRIDINE  97 N-BOC-2-AMINOMETHYLPYRIDINE 97 134807-28-6 C11H16N2O2
ETHYL 6-METHYLPYRIDINE-3-CARBOXYLATE ETHYL 6-METHYLPYRIDINE-3-CARBOXYLATE 21684-59-3 C9H11NO2
ETHYL 6-(CHLOROMETHYL)PYRIDINE-2-CARBOXYLATE ETHYL 6-(CHLOROMETHYL)PYRIDINE-2-CARBOXYLATE 49668-99-7 C9H10ClNO2
2-METHOXY-5-PICOLINE 2-METHOXY-5-PICOLINE 13472-56-5 C7H9NO
CHEMPACIFIC 38158 CHEMPACIFIC 38158 78846-88-5 C6H5Cl2N
3-METHYLPYRIDINE-2-BORONIC ACID 3-METHYLPYRIDINE-2-BORONIC ACID C6H8BNO2
2-(ACETOXYMETHYL)4-(3-METHOXYPROPOXY)-3-METHYLPYRIDINE 2-(ACETOXYMETHYL)4-(3-METHOXYPROPOXY)-3-METHYLPYRIDINE 117977-19-2 C13H19NO4
DIETHYL 2,6-DIMETHYL-3,5-PYRIDINEDICARBOXYLATE DIETHYL 2,6-DIMETHYL-3,5-PYRIDINEDICARBOXYLATE 1149-24-2 C13H17NO4
2-ACETAMIDO-4-METHYL-5-BROMOPYRIDINE 2-ACETAMIDO-4-METHYL-5-BROMOPYRIDINE 142404-82-8 C8H9BrN2O
2-BROMO-6-METHYL-4-TRIFLUOROMETHYLPYRIDINE 2-BROMO-6-METHYL-4-TRIFLUOROMETHYLPYRIDINE 451459-17-9 C7H5BrF3N
2-HYDRAZINO-5-METHYLPYRIDINE 2-HYDRAZINO-5-METHYLPYRIDINE 4931-01-5 C6H9N3
5-ISOCYANATO-2-METHYL-PYRIDINE 5-ISOCYANATO-2-METHYL-PYRIDINE 732245-99-7 C7H6N2O
2-METHYL-6-(TRIFLUOROMETHYL)PYRIDINE-3-CARBONYL CHLORIDE 2-METHYL-6-(TRIFLUOROMETHYL)PYRIDINE-3-CARBONYL CHLORIDE 261635-98-7 C8H5ClF3NO
2-ACETAMIDO-5-PICOLINE 2-ACETAMIDO-5-PICOLINE 4931-47-9 C8H10N2O
3-CHLORO-5-(TRIFLUOROMETHYL)PYRIDINE-2-CARBOXYLIC ACID 3-CHLORO-5-(TRIFLUOROMETHYL)PYRIDINE-2-CARBOXYLIC ACID 80194-68-9 C7H3ClF3NO2
6-(AMINOMETHYL)-2-PYRIDINE CARBOXYLIC ACID 6-(AMINOMETHYL)-2-PYRIDINE CARBOXYLIC ACID 160939-10-6 C8H10N2O2
ETHYL 4-BROMO-3,5-DIMETHYL-1H-PYRROLE-2-CARBOXYLATE ETHYL 4-BROMO-3,5-DIMETHYL-1H-PYRROLE-2-CARBOXYLATE 368869-96-9 C11H9BrN2O
3-CHLORO-5-METHYLPYRIDINE 3-CHLORO-5-METHYLPYRIDINE 19230-55-8 C6H6ClN
6-CHLORO-2-HYDROXYMETHYL PYRIDINE HYDROCHLORIDE 6-CHLORO-2-HYDROXYMETHYL PYRIDINE HYDROCHLORIDE 83782-89-2 C6H7Cl2NO
5-TRIFLUOROMETHYL-PYRIDINE-2-CARBOXYLICACIDMETHYLESTER 5-TRIFLUOROMETHYL-PYRIDINE-2-CARBOXYLICACIDMETHYLESTER 124236-37-9 C8H6F3NO2
2-Picoline-5-boronic acid pinacolate 2-Picoline-5-boronic acid pinacolate 610768-32-6 C12H18BNO2
6-Chloro-3-formyl-2-picoline 6-Chloro-3-formyl-2-picoline 884495-36-7 C7H6ClNO
6-METHYLPYRIDINE-3-CARBOTHIOAMIDE 6-METHYLPYRIDINE-3-CARBOTHIOAMIDE 175277-57-3 C7H8N2S
3-AMINO-2-BROMO-5-PICOLINE 3-AMINO-2-BROMO-5-PICOLINE 34552-14-2 C6H7BrN2
3,4-DIMETHOXY-2-METHYLPYRIDINE N-OXIDE 3,4-DIMETHOXY-2-METHYLPYRIDINE N-OXIDE 72830-07-0 C8H11NO3
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