Pyridine (C₅H₅N)

A basic heterocyclic organic compound; a colourless, pungent toxic...

Germanic warrior (4th century)

Dreaded Germanic warriors spreading out from Northern Europe...

Tyrosine

One of the 20 amino acids that make up proteins. It contains an...

Histidine

One of the 20 amino acids that make up proteins.

Acetaldehyde (ethanal) (CH₃CHO)

An aldehyde which is an important raw material and intermediate...

Serine

One of the 20 amino acids that make up proteins.

Threonine

One of the 20 amino acids that make up proteins.

Cis-2-butene (C₄H₈)

A colourless, heavier-than-air gas. Its geometric isomer is...

Pent-1-ene (C₅H₁₀)

A liquid with a characteristic unpleasant odour and a low boiling...

Tactics of the Hungarian raiders (9th-10th centuries)

The tactics of the Hungarian light cavalry included pretending to...

Calvinist College of Debrecen (18th century)

One of the oldest schools in Hungary, where several renowned...

Arc de Triomphe (Paris, 1836)

The construction of the arch of triumph was completed only after...

2,2 dimethylpropane (C₅H₁₂)

Colourless, odourless gas used as a standard in NMR spectroscopy.

Ethene (ethylene) (C₂H₄)

The first member in the homologous series of 1-alkenes.

Dimethylamine (NH(CH₃)₂)

A colourless gas with a pungent odour. It is widely used in industry.

Clothing (21st century)

Clothing reflects the lifestyle and culture of the region's...

Hydrogen peroxide (H₂O₂)

The compound of hydrogen and oxygen. Colourless, odourless liquid;...

RMS Queen Mary 2 (2003)

The largest ocean liner at the time of its construction.

Methyl formate (C₂H₄O₂)

The ester of formic acid and methanol, an aroma compound found in...

Proline

One of the 20 amino acids that make up proteins. Its amino group...

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