1-Methylpiperazine dihydrochloride


Empirical Formula (Hill Notation):
C5H12N2 · 2HCl
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:




246-250 °C (lit.)


1 M NH4OH: soluble 25 mg/mL, clear to hazy, colorless to light yellow

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InChI key



1-Methylpiperazine dihydrochloride (Methylpiperazine dihydrochloride) has been used in the preparation of 1-methylpiperazine-1,4-diium tetrachloridozincate hemihydrate.


25 g in poly bottle


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Hazard Statements

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Sondra Walha et al.
Acta crystallographica. Section E, Structure reports online, 67(Pt 11), m1605-m1605 (2012-01-06)
The crystal structure of the title compound, (C(5)H(14)N(2))[ZnCl(4)]·0.5H(2)O, is built up from discrete 1-methyl-piperazine-diium cations with chair conformation, tetrahedral tetrachloridozincate anions and uncoordinated solvent water mol-ecules linked together by three types of inter-molecular hydrogen bonds, viz. N-H⋯Cl, N-H⋯O and O-H⋯Cl.
J M Entrena et al.
Scientific reports, 6, 37835-37835 (2016-11-26)
Sigma-1 receptor antagonists promote antinociception in several models of pain, but the effects of sigma-1 agonists on nociception (particularly when the nociceptive system is primed) are not so well characterized; therefore we evaluated the effects of sigma-1 agonists on pain...
H Welinder et al.
International archives of allergy and applied immunology, 79(3), 259-262 (1986-01-01)
The presence of specific IgE antibodies against conjugates between human serum albumin and piperazine, a compound previously known to cause occupational asthma, and N-methyl-piperazine, respectively, was demonstrated by RAST, RAST inhibition and skin prick tests in 2 asthmatic subjects occupationally...
E Gavathiotis et al.
Nucleic acids research, 28(3), 728-735 (2000-01-19)
The solution structure of the dodecamer duplex d(CTTTTGCAAAAG)(2)and its 2:1 complex with the bis -benzimidazole Hoechst 33258 has been investigated by NMR and NOE-restrained molecular dynamics (rMD) simulations. Drug molecules are bound in each of the two A-tracts with the...
A R Roudman et al.
Journal of biomedical materials research, 39(4), 667-672 (1998-03-10)
Aminated poly(vinyl chloride) (PVC) membranes were prepared that had a Nernstian response over a wide range of pH. The reaction between PVC and methyl-piperazine (MePIP) in dimethylformamide (DMF) was studied over a wide range of time and temperature, and in...

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