CAS No.: | 109-01-3 |
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Formula: | C5h12n2 |
EINECS: | 203-639-5 |
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1-Methylpiperazine | |||||
1-Methylpiperazine is used in the preparation of 2-(4-Methyl-1-piperazinylmethyl)acrylophenone(MPMAP) , an antimicrotubular drug. | |||||
Bacis information | |||||
CAS | 109-01-3 | ||||
English alias | Piperazine, 1-methyl-;N-METHYL-PIPERAZINE;N-Methylpiperazine;PIPERAZINE,1-METHYL;4-Methylpiperazine;Cyclizine Related Compound A;1-Methyl-piperazine;METHYLPIPERAZINE | ||||
Molecular formula | C5H12N2 | ||||
Molecular weight | 100.162 | ||||
Accurate mass | 100.1 | ||||
Psa | 15.27 | ||||
Logp | -0.2119 | ||||
Numbering system | |||||
UNII | |||||
BRN number | 102724 | ||||
EINECS number | 203-639-5 | ||||
MDL number | MFCD00005966 | ||||
RTECS number | TM1225000 | ||||
PubChem number | 24885849 | ||||
Physicochemical property | |||||
Appearance and properties | Clear colorless liquid | ||||
Density | 0.903g/mLat 25°C(lit.) | ||||
Boiling point | 138°C(lit.) | ||||
Melting point | -6 °C | ||||
Freezing point | |||||
Flash point | 108°F | ||||
Refractive index | n20/D 1.466(lit.) | ||||
Water solubility | soluble | ||||
Stability | Stable under normal temperatures and pressures. | ||||
Storage conditions | Store under Nitrogen | ||||
Safety information | |||||
RTECS number | TM1225000 | ||||
Security description | S16-S26-S36/37/39-S45 | ||||
Danger category code | R10; R21; R34 | ||||
WGK germany | 2 | ||||
Dangerous goods transport code | UN 2734 8/PG 2 | ||||
Customs code | |||||
Hazard category | 3 | ||||
Packing Grade | III | ||||
Hazard Prevention Note | |||||
Signal word | |||||
Danger mark | C | ||||
Production method and use | |||||
Production method | It is prepared by methylation of piperazine hexahydrate. Piperazine hexahydrate and hydrochloric acid were added to the reaction pot, heated to 45ºC, and the mixture of formic acid and formaldehyde was added. Add by, react at about 50ºC for 2-3h, and then heat up the reflux until carbon dioxide gas no longer escapes. Cool to 80ºC, add hydrochloric acid, heat and steam acid until dry. After slightly cooling, methanol was added, reflux was heated for 30min, and filtration was carried out while hot (the filter residue was piperazine dihydrochloride). Methanol was recovered from the filtrate to the end, and the residual liquid was added to sodium hydroxide solution to pH=14 and distilled to obtain methyl piperazine containing water. Anhydrous methylpiperazine was obtained by using benzene to heat the reflux water to the end, fractionation and collection of 132-140ºC fractions. The yield is about 50%. | ||||
Use | Used as solvent, intermediate in organic synthesis. In the pharmaceutical industry, it is used to prepare antimicrobial drugs such as meperifamycin and antipsychotic drug trifluoperazine. It is mainly used as an intermediate of ofloxacin, clozapine, Sildenafil, Torimab, Zopiclone and other drugs, and can also be used in pesticides, dyes, plastics and other industries. |