A summary of the most common chemical descriptors (InChI Key and SMILES codes) for Noramidopyrine are summarized together with 3D and 2D structures and relevant physico-chemical properties.

What is the Noramidopyrine?

The molecule Noramidopyrine presents a molecular formula of C12H15N3O and its IUPAC name is 1,5-dimethyl-4-(methylamino)-2-phenylpyrazol-3-one.

Noramidopyrine is a molecule that is used as an anticoagulant. It is a pyridine derivative and has a molecular weight of 169.16. The molecule has a melting point of 72-74 degrees Celsius and a boiling point of 290 degrees Celsius. It is slightly soluble in water and is insoluble in organic solvents. Noramidopyrine has a half-life of about 2 hours in the body..

3D structure

Cartesian coordinates

Geometry of Noramidopyrine in x, y and z coordinates (Å units) to copy/paste elsewhere. Generated with Open Babel software.

2D drawing


Noramidopyrine JILCEWWZTBBOFS-UHFFFAOYSA-N chemical compound 2D structure molecule svg


Molecule descriptors

IUPAC name1,5-dimethyl-4-(methylamino)-2-phenylpyrazol-3-one
InChI codeInChI=1S/C12H15N3O/c1-9-11(13-2)12(16)15(14(9)3)10-7-5-4-6-8-10/h4-8,13H,1-3H3

Other names (synonyms)

IUPAC nomenclature provides a standardized method for naming chemical compounds. Although this system is widely used in chemistry, many chemical compounds have also other names commonly used in different contexts. These synonyms can come from a variety of sources and are used for a variety of purposes.

One common source of synonyms for chemical compounds is the common or trivial names, assigned on the basis of appearance, properties, or origin of the molecule.

Another source of synonyms are historical or obsolete names employed in the past, however replaced nowadays by more modern or standardized names.

In addition to common and historical names, chemical compounds may also have synonyms that are specific to a particular field or industry.

  • 1,2-Dihydro-1,5-dimethyl-4-(methylamino)-2-phenyl-3H-pyrazol-3-one
  • 1,5-Dimethyl-4-(methylamino)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one
  • 1,5-Dimethyl-4-(methylamino)-2-phenyl-1,2-dihydro-3H-pyrazol-3-one #
  • 1,5-dimethyl-4-(methylamino)-2-phenylpyrazol-3-one
  • 2,3-dimethyl-4-monomethylamino-1-phenyl-3-pyrazolin5-one
  • 3H-Pyrazol-3-one, 1,2-dihydro-1,5-dimethyl-4-(methylamino)-2-phenyl-
  • 3H-pyrazol-3-one, 1,2-dihydro-1,5-dimethyl-4-(methylamino)-2-phenyl-, hydrochloride
  • 4-(Methylamino)-antipyrine
  • 4-(Methylamino)antipyrine
  • 4-(N-methyl)-aminoantipyrine
  • 4-Methylamino Antipyrine
  • 4-Methylaminophenazone
  • 4-Monomethylaminoantipyrine
  • 4-Monomethylaminophenazone
  • 4-methylaminoantipyrine
  • 519-98-2
  • B0337-466650
  • BDBM50360021
  • BRN 0195234
  • C15913
  • CS-0113885
  • ChemDiv2_002661
  • FS-5885
  • FT-0648610
  • HMS1376I21
  • HY-135731
  • J-503822
  • Methylaminoantipyrine
  • Methylaminophenazone
  • Monomethylaminoantipyrine
  • N-Desmethylaminopyrine
  • N-Methyl-4-aminoantipyrine
  • N-Methyl-4-aminophenazone
  • N-Methylaminoantipyrine
  • N-Methylaminophenazone
  • N.A.P.
  • NER31DE951
  • Noramidopyrine
  • Noraminopyrine
  • Oprea1_672076
  • Q27140411
  • STK735134

Reference codes for other databases

There exist several different chemical codes commonly used in orded to identify molecules:
  • ZINC121456
  • UNII-NER31DE951
  • AKOS003342430
  • ALBB-010210
  • DTXSID80199865
  • CHEMBL1164701
  • CHEBI:73261
  • EINECS 208-281-3
  • SCHEMBL537958

Physico-Chemical properties

IUPAC name1,5-dimethyl-4-(methylamino)-2-phenylpyrazol-3-one
Molecular formulaC12H15N3O
Molecular weight217.267
Melting point (ºC)
Boiling point (ºC)
Density (g/cm3)
Molar refractivity65.56
Topological polar surface area39.0

LogP and topological polar surface area (TPSA) values were estimated using Open Babel software.

The n-octanol/water partition coeficient (Kow) data is applied in toxicology and drug research. Kow values are used, to guess the environmental fate of persistent organic pollutants. High partition coefficients values, tend to accumulate in the fatty tissue of organisms. Molecules with a log(Kow) (or LogP) greater than 5 are considered to bioaccumulate.

TPSA values are the sum of the surface area over all polar atoms or molecules, mainly oxygen and nitrogen, also including hydrogen atoms.

In medicinal chemistry, TPSA is used to assess the ability of a drug to permeabilise cells.

For molecules to penetrate the blood-brain barrier (and act on receptors in the central nervous system), TPSA values below 90 Å2 are required. Thus, molecules with a polar surface area greater than 140 Å2 tend to be poorly permeable to cell membranes.