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IUPAC numerical multiplier information


Number Multiplier Number Multiplier
1 mono- 30 triaconta-
2 di- 31 hentriaconta-
3 tri- 32 dotriaconta-
4 tetra- 33 tritriaconta-
5 penta- 34 tetratriaconta-
6 hexa- 40 tetraconta-
7 hepta- 50 pentaconta-
8 octa- 60 hexaconta-
9 nona- 70 heptaconta-
10 deca- 80 octaconta-
11 undeca- 90 nonaconta-
12 dodeca- 100 hecta-
13 trideca- 200 dicta-
14 tetradeca- 300 tricta-
15 pentadeca- 400 tetracta-
16 hexadeca- 500 pentacta-
17 heptadeca- 600 hexacta-
18 octadeca- 700 heptacta-
19 nonadeca- 800 octacta-
20 icosa- 900 nonacta-
21 henicosa- 1000 kilia-
22 docosa- 2000 dilia-
23 tricosa- 3000 trilia-
24 tetracosa- 4000 tetralia-
25 pentacosa- 5000 pentalia-
26 hexacosa- 6000 hexalia-
27 heptacosa- 7000 heptalia-
28 octacosa- 8000 octalia-
29 nonacosa- 9000 nonalia-

The numerical multiplier (or multiplying affix) in IUPAC nomenclature indicates how many particular atoms or functional groups are attached at a particular point in a molecule. The affixes are derived from both Latin and Greek.

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