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IUPAC numerical multiplier : ウィキペディア英語版 | IUPAC numerical multiplier
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. == Compound affixes == The affix for a number larger than twelve is constructed in the opposite order to that which the number is written in Hindu-Arabic numerals: units, then tens, then hundreds, then thousands. For example: :548 → octa- (8) + tetraconta- (40) + pentacta- (500) = ''octatetracontapentacta-'' :9267 → hepta- (7) + hexaconta- (60) + dicta- (200) + nonalia- (9000) = ''heptahexacontadictanonalia-''
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