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
5-Methylpyridine-3-sulfonic acid 5-Methylpyridine-3-sulfonic acid 4808-70-2 C6H7NO3S
2-METHYLPYRIDINE-4-BORONIC ACID PINACOL ESTER 2-METHYLPYRIDINE-4-BORONIC ACID PINACOL ESTER 660867-80-1 C12H18BNO2
1-FLUORO-2,4,6-TRIMETHYLPYRIDINIUM TETRAFLUOROBORATE 1-FLUORO-2,4,6-TRIMETHYLPYRIDINIUM TETRAFLUOROBORATE 109705-14-8 C8H11BF5N
2,3-DIBROMO-6-PICOLINE 2,3-DIBROMO-6-PICOLINE 261373-04-0 C6H5Br2N
5-BROMO-2-METHOXY-3-METHYLPYRIDINE 5-BROMO-2-METHOXY-3-METHYLPYRIDINE 760207-87-2 C7H8BrNO
5-Chloro-2-(trifluoromethyl)pyridine 5-Chloro-2-(trifluoromethyl)pyridine 349-94-0 C6H3ClF3N
2-METHYL-6-METHOXYPYRIDINE-3-BORONIC ACID 2-METHYL-6-METHOXYPYRIDINE-3-BORONIC ACID 459856-12-3 C7H10BNO3
4-FLUORO-2-METHYLPYRIDINE 4-FLUORO-2-METHYLPYRIDINE 766-16-5 C6H6FN
2,6-Dichloro-3-methylpyridine 2,6-Dichloro-3-methylpyridine 58584-94-4 C6H5Cl2N
2-CHLORO-4-IODO-3-METHYLPYRIDINE 2-CHLORO-4-IODO-3-METHYLPYRIDINE 153034-88-9 C6H5ClIN
2-Iodo-3-methylpyridine 2-Iodo-3-methylpyridine 22282-58-2 C6H6IN
2,6-BIS(BROMOMETHYL)PYRIDINE 2,6-BIS(BROMOMETHYL)PYRIDINE 7703-74-4 C7H7Br2N
2-BROMO-6-(BROMOMETHYL)PYRIDINE 2-BROMO-6-(BROMOMETHYL)PYRIDINE 83004-10-8 C6H5Br2N
3-CHLORO-5-(TRIFLUOROMETHYL)PYRIDINE-2-THIOL 3-CHLORO-5-(TRIFLUOROMETHYL)PYRIDINE-2-THIOL 76041-74-2 C6H3ClF3NS
2-FORMYL-5-PICOLINE 2-FORMYL-5-PICOLINE 4985-92-6 C7H7NO
2-CHLORO-3-METHYLPYRIDINE-5-BORONIC ACID 2-CHLORO-3-METHYLPYRIDINE-5-BORONIC ACID 1003043-40-0 C6H7BClNO2
5-AMINO-2-METHOXY-3-METHYLPYRIDINE HCL 5-AMINO-2-METHOXY-3-METHYLPYRIDINE HCL 867012-70-2 C7H10N2O
4-Chloro-2,6-dimethylpyridine 4-Chloro-2,6-dimethylpyridine 3512-75-2 C7H8ClN
2-BROMO-3-FLUORO-4-PICOLINE 2-BROMO-3-FLUORO-4-PICOLINE 884494-37-5 C6H5BrFN
1-(5-METHYL-PYRIDIN-2-YL)-ETHANONE 1-(5-METHYL-PYRIDIN-2-YL)-ETHANONE 5308-63-4 C8H9NO
2,6-Dichloro-4-picoline 2,6-Dichloro-4-picoline 39621-00-6 C6H5Cl2N
6-Bromo-5-methylpyridine-3-boronic acid 6-Bromo-5-methylpyridine-3-boronic acid 1003043-34-2 C6H7BBrNO2
2-Chloro-3-Nitro-5-Bromo-6-Picoline 2-Chloro-3-Nitro-5-Bromo-6-Picoline 186413-75-2 C6H4BrClN2O2
2-BROMO-3-CHLORO-5-PICOLINE 2-BROMO-3-CHLORO-5-PICOLINE 65550-81-4 C6H5BrClN
5-HYDRAZINYL-2-METHYLPYRIDINE 5-HYDRAZINYL-2-METHYLPYRIDINE 197516-48-6 C6H9N3
4-METHYLPYRIDINE-2-BORONIC ACID 4-METHYLPYRIDINE-2-BORONIC ACID 372963-48-9 C6H8BNO2
1-(4-METHYL-PYRIDIN-2-YL)-PIPERAZINE 1-(4-METHYL-PYRIDIN-2-YL)-PIPERAZINE 34803-67-3 C10H15N3
2-METHOXY-3-NITRO-4-PICOLINE 2-METHOXY-3-NITRO-4-PICOLINE 160590-36-3 C7H8N2O3
2-Bromo-5-fluoro-3-picoline 2-Bromo-5-fluoro-3-picoline 38186-85-5 C6H5BrFN
2-Chloro-4-methylpyridine-5-boronic acid 2-Chloro-4-methylpyridine-5-boronic acid 913836-08-5 C6H7BClNO2
2-CHLORO-6-METHYLPYRIDINE-4-CARBONYL CHLORIDE 2-CHLORO-6-METHYLPYRIDINE-4-CARBONYL CHLORIDE 26413-58-1 C7H5Cl2NO
4-Methylpyridine-3-sulfonic acid 4-Methylpyridine-3-sulfonic acid 4808-71-3 C6H7NO3S
Bis(2,4,6-trimethylpyridine)iodine(I) hexafluorophosphate Bis(2,4,6-trimethylpyridine)iodine(I) hexafluorophosphate 113119-46-3 C16H22F6IN2P
Borane-2-picoline complex Borane-2-picoline complex 3999-38-0 C6H10BN
2-FLUORO-4-METHYLPYRIDINE-5-BORONIC ACID 2-FLUORO-4-METHYLPYRIDINE-5-BORONIC ACID 1072944-18-3 C6H7BFNO2
3-FLUORO-2-METHYLPYRIDINE 3-FLUORO-2-METHYLPYRIDINE 15931-15-4 C6H6FN
3,5-dimethylpyridin-4-amine 3,5-dimethylpyridin-4-amine 43078-60-0 C7H10N2
6-Methylpyridine-3-sulfonic acid 6-Methylpyridine-3-sulfonic acid 4808-69-9 C6H7NO3S
1-[3-CHLORO-5-(TRIFLUOROMETHYL)PYRID-2-YL]PIPERAZINE 1-[3-CHLORO-5-(TRIFLUOROMETHYL)PYRID-2-YL]PIPERAZINE 132834-59-4 C10H11ClF3N3
2-Chloro-5-(trifluoromethyl)isonicotinic acid 97% 2-Chloro-5-(trifluoromethyl)isonicotinic acid 97% 505084-58-2 C7H3ClF3NO2
2-Chloro-5-(trifluoromethyl)-3-pyridinecarboxylic acid 2-Chloro-5-(trifluoromethyl)-3-pyridinecarboxylic acid 505084-59-3 C7H3ClF3NO2
2-(BOC-AMINO)-3-METHYLPYRIDINE 2-(BOC-AMINO)-3-METHYLPYRIDINE 138343-75-6 C11H16N2O2
2,4-DIMETHYL-3-PYRIDINECARBOXYLIC ACID 2,4-DIMETHYL-3-PYRIDINECARBOXYLIC ACID 55314-30-2 C8H9NO2
3-CHLORO-2-METHYLPYRIDINE 3-CHLORO-2-METHYLPYRIDINE 72093-03-9 C6H6ClN
2-Acetylamino-4-methylpyridine 2-Acetylamino-4-methylpyridine 5327-32-2 C8H10N2O
2-CHLORO-1-METHYLPYRIDINIUM P-TOLUENESULFONATE 2-CHLORO-1-METHYLPYRIDINIUM P-TOLUENESULFONATE 7403-46-5 C13H14ClNO3S
3-Bromo-2-trifluoromethylpyridine 3-Bromo-2-trifluoromethylpyridine 590371-58-7 C6H3BrF3N
5-CHLORO-2-PICOLINE 5-CHLORO-2-PICOLINE 72093-07-3 C6H6ClN
TMPYP TMPYP 36951-72-1 C72H66N8O12S4
3-Fluoro-2-methoxy-6-picoline 3-Fluoro-2-methoxy-6-picoline 375368-80-2 C7H8FNO
3-Amino-2-bromo-4,6-dimethylpyridine 3-Amino-2-bromo-4,6-dimethylpyridine 104829-98-3 C7H9BrN2
6-CHLORO-4-METHYLPYRIDINE-2-CARBOXYLIC ACID 6-CHLORO-4-METHYLPYRIDINE-2-CARBOXYLIC ACID 324028-95-7 C7H6ClNO2
2-Fluoro-4-trifluoromethyl-pyridine 2-Fluoro-4-trifluoromethyl-pyridine 118078-66-3 C6H3F4N
3-(Chloromethyl)-5-methylpyridine 3-(Chloromethyl)-5-methylpyridine 1007089-84-0 C7H8ClN
2-AMINO-7-CHLORO-5-OXO-5H-(1)BENZOPYRANO-(2,3-B)-PYRIDINE-3-CARBONITRILE 2-AMINO-7-CHLORO-5-OXO-5H-(1)BENZOPYRANO-(2,3-B)-PYRIDINE-3-CARBONITRILE 68302-10-3 C13H6ClN3O2
3-Bromo-4-trifluoromethylpyridine 3-Bromo-4-trifluoromethylpyridine 936841-70-2 C6H3BrF3N
(6-Methylpyridin-3-yl)methanol (6-Methylpyridin-3-yl)methanol 34107-46-5 C7H9NO
2-chloro-5-(trifluoromethyl)pyridine-3-boronic acid 2-chloro-5-(trifluoromethyl)pyridine-3-boronic acid 536693-96-6 C6H4BClF3NO2
4-AMINO-3,5-DIBROMO-2-METHYLPYRIDINE 4-AMINO-3,5-DIBROMO-2-METHYLPYRIDINE 126325-54-0 C6H6Br2N2
2-AMINO-3,5-DICHLORO-4-METHYLPYRIDINE 2-AMINO-3,5-DICHLORO-4-METHYLPYRIDINE 31430-47-4 C6H6Cl2N2
5-CHLORO-3-CYANOPYRIDINE 5-CHLORO-3-CYANOPYRIDINE 51269-82-0 C6H3ClN2
2-DIPHENYLPHOSPHINO-6-METHYLPYRIDINE 2-DIPHENYLPHOSPHINO-6-METHYLPYRIDINE 132682-77-0 C18H16NP
4-ACETOXYMETHYLPYRIDINE 4-ACETOXYMETHYLPYRIDINE 1007-48-3 C8H9NO2
1-METHYL-5-OXO-PYRROLIDINE-3-CARBOXYLIC ACID 1-METHYL-5-OXO-PYRROLIDINE-3-CARBOXYLIC ACID 42346-68-9 C6H9NO3
2,3-Dichloro-5-(trichloromethyl)pyridine 2,3-Dichloro-5-(trichloromethyl)pyridine 69045-83-6 C6H2Cl5N
2-Anilinomethylpyridine 2-Anilinomethylpyridine 4329-81-1 C12H12N2
2-CHLORO-5-FORMYL-4-PICOLINE 2-CHLORO-5-FORMYL-4-PICOLINE 884495-38-9 C7H6ClNO
3-BROMO-2-METHOXY-6-PICOLINE 3-BROMO-2-METHOXY-6-PICOLINE 717843-47-5 C7H8BrNO
4-(TRIFLUOROMETHYL)PYRIDINE-2-CARBOXYLIC ACID 4-(TRIFLUOROMETHYL)PYRIDINE-2-CARBOXYLIC ACID 588702-62-9 C7H4F3NO2
BIS(1-METHYLPIPERIDIN-4-YL)AMINE BIS(1-METHYLPIPERIDIN-4-YL)AMINE 117927-28-3 C12H25N3
4-PHENYLPYRIDINE-2-CARBOXYLIC ACID 4-PHENYLPYRIDINE-2-CARBOXYLIC ACID 52565-56-7 C12H9NO2
2-(CHLOROMETHYL)-6-METHYLPYRIDINE 2-(CHLOROMETHYL)-6-METHYLPYRIDINE 3099-29-4 C7H8ClN
METHYL 3-METHYLPYRIDINE-2-CARBOXYLATE METHYL 3-METHYLPYRIDINE-2-CARBOXYLATE 59718-84-2 C8H9NO2
2-AMINO-4-METHYL-5-PYRIDINECARBOXYLIC ACID 2-AMINO-4-METHYL-5-PYRIDINECARBOXYLIC ACID 179555-11-4 C7H8N2O2
5-Methoxy-2-(trifluoromethyl)pyridine 5-Methoxy-2-(trifluoromethyl)pyridine 216766-13-1 C7H6F3NO
2-CHLORO-6-METHYLPYRIDINE-4-CARBOXALDEHYDE 2-CHLORO-6-METHYLPYRIDINE-4-CARBOXALDEHYDE 479613-16-6 C7H6ClNO
4-Pyridinemethanamine,2-amino-(9CI) 4-Pyridinemethanamine,2-amino-(9CI) 199296-51-0 C6H9N3
3,5-DIMETHYLPYRIDINE-4-CARBOXALDEHYDE 3,5-DIMETHYLPYRIDINE-4-CARBOXALDEHYDE 201286-64-8 C8H9NO
3-Chloro-5-(trifluoromethyl)pyridine-2-carboxylic acid 3-Chloro-5-(trifluoromethyl)pyridine-2-carboxylic acid 80194-18-9 C46H44Cl3N7O9S2
5-BROMO-2-CHLORO-3-(TRIFLUOROMETHYL)PYRIDINE 5-BROMO-2-CHLORO-3-(TRIFLUOROMETHYL)PYRIDINE 211122-40-6 C6H2BrClF3N
3-AMINO-2-CHLORO-6-(TRIFLUOROMETHYL)PYRIDINE 3-AMINO-2-CHLORO-6-(TRIFLUOROMETHYL)PYRIDINE 65182-56-1 C14H10N2O
2-AMINOMETHYL-3-METHYLPYRIDINE 2-AMINOMETHYL-3-METHYLPYRIDINE 153936-26-6 C7H10N2
3-BROMO-2-FLUORO-5-(TRIFLUOROMETHYL)PYRIDINE 3-BROMO-2-FLUORO-5-(TRIFLUOROMETHYL)PYRIDINE 1031929-01-7 C6H2BrF4N
(5-TRIFLUOROMETHYL-PYRIDIN-2-YL) METHANOL (5-TRIFLUOROMETHYL-PYRIDIN-2-YL) METHANOL 31181-84-7 C7H6F3NO
4-(3-Methoxypropoxy)-2,3-dimethylpyridine-N-oxide 4-(3-Methoxypropoxy)-2,3-dimethylpyridine-N-oxide 117977-18-1 C11H17NO3
2-FLUORO-6-PICOLINE-5-BORONIC ACID 2-FLUORO-6-PICOLINE-5-BORONIC ACID 904326-91-6 C6H7BFNO2
5-Methylpyridine-3-carboxaldehyde 5-Methylpyridine-3-carboxaldehyde 100910-66-5 C7H7NO
NAPHTHALEN-1-YLMETHYL-PYRIDIN-4-YLMETHYL-AMINE NAPHTHALEN-1-YLMETHYL-PYRIDIN-4-YLMETHYL-AMINE 680185-80-2 C17H16N2
2-METHYLNICOTINALDEHYDE 2-METHYLNICOTINALDEHYDE 60032-57-7 C7H7NO
2-METHYL-5-IODOPYRIDINE 2-METHYL-5-IODOPYRIDINE 695-17-0 C6H6IN
2,5-DICHLORO-3-METHYLPYRIDINE 2,5-DICHLORO-3-METHYLPYRIDINE 59782-90-0 C6H5Cl2N
(6-Chloro-2-pyridinyl)methanol (6-Chloro-2-pyridinyl)methanol 33674-97-4 C6H6ClNO
N-BUTYL-4-METHYLPYRIDINIUM HEXAFLUOROPHOSPHATE N-BUTYL-4-METHYLPYRIDINIUM HEXAFLUOROPHOSPHATE 401788-99-6 C10H16F6NP
2-Amino-4-chloro-6-picoline 2-Amino-4-chloro-6-picoline 36340-61-1 C6H7ClN2
2-Amino-6-chloro-4-picoline 2-Amino-6-chloro-4-picoline 51564-92-2 C6H7ClN2
4-Chloro-5-fluoro-2-methylpyridine 4-Chloro-5-fluoro-2-methylpyridine 169750-95-2 C6H5ClFN
N-BUTYL-3-METHYLPYRIDINIUM BROMIDE N-BUTYL-3-METHYLPYRIDINIUM BROMIDE 26576-85-2 C10H16BrN
2-Pyridinecarboxaldehyde,6-(fluoromethyl)-(9CI) 2-Pyridinecarboxaldehyde,6-(fluoromethyl)-(9CI) 208111-28-8 C7H6FNO
2-METHYLPYRIDINE-4-SULFONIC ACID 2-METHYLPYRIDINE-4-SULFONIC ACID 408533-46-0 C6H7NO3S
2,6-DIMETHYLPYRIDINIUM P-TOLUENESULFONATE 2,6-DIMETHYLPYRIDINIUM P-TOLUENESULFONATE 93471-41-1 C14H17NO3S
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