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

What is the (S)-Temazepam?

The molecule (S)-Temazepam presents a molecular formula of C16H13ClN2O2 and its IUPAC name is (3S)-7-chloro-3-hydroxy-1-methyl-5-phenyl-3H-1,4-benzodiazepin-2-one.

S-Temazepam is a molecule of the benzodiazepine class which is used as a short-acting hypnotic drug. It is a white, crystalline powder which is soluble in water. The effects of temazepam last for 6–8 hours..

Temazepam is a member of the class of benzodiazepines, which are central nervous system (CNS) depressants and produce a range of effects including sedation, muscle relaxation, reduction in anxiety, and prevention of seizures. Benzodiazepines act by binding to the GABA receptors in the brain, which results in increased inhibition of the nervous system..

Temazepam is used for the short-term treatment of insomnia. It is typically used for no longer than two weeks. The most common side effects of temazepam include drowsiness, dizziness, and impaired coordination. Temazepam can also cause rebound insomnia, which is when insomnia symptoms return after the drug is stopped..

If you are considering taking temazepam for insomnia, it is important to talk to your doctor about the potential risks and benefits. Temazepam is a controlled substance and can be addictive. It is important to only take the drug as prescribed and to not take it for longer than recommended..

3D structure

Cartesian coordinates

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

2D drawing


(S)-Temazepam SEQDDYPDSLOBDC-HNNXBMFYSA-N chemical compound 2D structure molecule svg


Molecule descriptors

IUPAC name(3S)-7-chloro-3-hydroxy-1-methyl-5-phenyl-3H-1,4-benzodiazepin-2-one
InChI codeInChI=1S/C16H13ClN2O2/c1-19-13-8-7-11(17)9-12(13)14(18-15(20)16(19)21)10-5-3-2-4-6-10/h2-9,15,20H,1H3/t15-/m0/s1

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.

  • (+)-Temazepam
  • (3S)-7-Chloro-1,3-dihydro-3-hydroxy-1-methyl-5-phenyl-2H-1,4-benzodiazepin-2-one
  • (3S)-7-Chloro-3-hydroxy-1-methyl-5-phenyl-1H-1,4-benzodiazepin-2(3H)-one
  • (S)-Temazepam
  • 2H-1,4-Benzodiazepin-2-one, 7-chloro-1,3-dihydro-3-hydroxy-1-methyl-5-phenyl-, (3S)-
  • 2H-1,4-Benzodiazepin-2-one, 7-chloro-1,3-dihydro-3-hydroxy-1-methyl-5-phenyl-, (S)-
  • 3TEB7I2MGE
  • 52432-56-1
  • Q27258012
  • Temazepam, (S)-

Reference codes for other databases

There exist several different chemical codes commonly used in orded to identify molecules:
  • ZINC740
  • SCHEMBL29464

Physico-Chemical properties

IUPAC name(3S)-7-chloro-3-hydroxy-1-methyl-5-phenyl-3H-1,4-benzodiazepin-2-one
Molecular formulaC16H13ClN2O2
Molecular weight300.74
Melting point (ºC)
Boiling point (ºC)
Density (g/cm3)
Molar refractivity89.11
Topological polar surface area52.9

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.