Purine (C₅H₄N₄)

A heterocyclic aromatic organic compound, its derivatives include guanine and adenine.

Beryllium dichloride (BeCl₂)

Used in the production of beryllium and as a catalyst.

Isoprene (2-methyl-1,3-butadiene) (C₅H₈)

Synthetic rubber is produced by the polymerisation of isoprene.

Nitrogen monoxide (Nitric oxide) (NO)

A colorless, heavier-than-air gas, an intermediate in the production of nitric acid.

Trimethylamine N(CH₃)₃

A tertiary amine with a characteristic unpleasant odor, occurring in spoiled food.

Bromofluorochloromethane (CHClBrF)

The molecule has two enantiomers: stereoisomers that are mirror images of each other and are not superimposable.

Phenol (C₆H₅OH)

The simplest of the aromatic hydroxy compounds.

Sulfur (S₈)

An odorless, yellow, solid substance, the 16th most common in the Earth´s crust. One of the best known sulfur compounds is pyrite, also known as ´fool´s gold´.

Sulfur dioxide (SO₂)

Sulfur dioxide emission is the main cause of acid rains. It is an intermediate product in the production of sulfuric acid.

Chlorine (Cl₂)

A yellow-green toxic gas with a strong odor, one of the halogens.

Formamide (methanamide) (HCONH₂)

A colorless, slightly viscous, hygroscopic liquid used in the production of formic acid, hydrogen cyanide and other organic compounds.

D-ribose (C₅H₁₀O₅)

The open-chain version of ribose, which occurs naturally in nucleic acids, coenzymes, nucleotides and nucleosides.

Bromine (Br₂)

One of the halogens, it may cause skin irritation.

Phosphoric acid (H₃PO₄)

It is also used as a food additive, limescale and rust remover.

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