
1) Ethyl mercaptan
Found on
https://www.crosswordclues.com/clue/mercaptan

• (n.) Any one of series of compounds, hydrosulphides of alcohol radicals, in composition resembling the alcohols, but containing sulphur in place of oxygen, and hence called also the sulphur alcohols. In general, they are colorless liquids having a strong, repulsive, garlic odor. The name is specifically applied to ethyl mercaptan, C2H5SH. So...
Found on
http://thinkexist.com/dictionary/meaning/mercaptan/

Molecules containing sulphur with a low molecular weight and therefore very light.
Found on
http://www.contractorsunlimited.co.uk/glossary.shtml

<chemistry> Any one of series of compounds, hydrosulphides of alcohol radicals, in composition resembling the alcohols, but containing sulphur in place of oxygen, and hence called also the sulphur alcohols. In general, they are colourless liquids having a strong, repulsive, garlic odour. The name is specifically applied to ethyl mercaptan, C2...
Found on
http://www.encyclo.co.uk/local/20973

(mәr-kap´tan) thiol.
Found on
http://www.encyclo.co.uk/local/21001

Molecules containing sulfur, very light because of low molecular weight.
Found on
http://www.encyclo.co.uk/visitor-contributions.php
Mer·cap'tan noun [ French, from New Latin
mercurius mercury + Latin
captans , present participle of
captare to seize, v. intens. from
capere .]
(Chemistry) Any one of series of compounds, hydrosulphides of alcohol radicals, in composition resembling the alcohols, but...
Found on
http://www.encyclo.co.uk/webster/M/48

Smell of rotten eggs
Found on
http://www.hintsandthings.co.uk/livingroom/glossaryJKLM.htm

Type: Term Pronunciation: mer-kap′tan Definitions: 1. A class of substances in which the oxygen of an alcohol has been replaced by sulfur (cysteine). 2. In dentistry, a class of elastic impression compounds sometimes referred to as rubber base materials. Synonyms: thioalcohol See: thiol
Found on
http://www.medilexicon.com/medicaldictionary.php?t=54239

The skunky odor of methyl and ethyl sulfides.
Found on
https://www.encyclo.co.uk/local/22309
No exact match found.