6 ms·

I see you've never had to deal with IUPAC systemic naming? For example paracetamol's systemic name is N-(4-hydroxyphenyl)-Acetamide. Cholesterol's is 2,15-dimet

I see you've never had to deal with IUPAC systemic naming? For example paracetamol's systemic name is N-(4-hydroxyphenyl)-Acetamide. Cholesterol's is 2,15-dimethyl-14-(1,5-dimethylhexyl)tetracyclo[8.7.0.02,7.011,15]heptadec-7-en-5-ol.

mcbits 10y ago
That's zenzizenziawful (doubleplusungood in modern notation).
andrepd 10y ago
That at least has a logical meaning, and you really can't simplify it because the thing it represents is that complicated. Using a complicated system of strange words to represent numbers is incomparably worse.
- jballanc 10y ago
  Meh...it's more of a relic of a weird transition point when chemists had the tools to discover complete structures but didn't have the tools to communicate them robustly other than "in words". These days most non-trivial chemicals are described using their "common name" (e.g. Cholesterol), and if you need a robust way of communicating structure there's SMILES (e.g. C[C@H](CCCC(C)C)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CC=C4[C@@]3(CC[C@@H](C4)O)C)C for Cholesterol). Almost no one will attempt to parse SMILES for non-trivial molecules by hand, but almost every computational package can easily parse them.
  - gleenn 10y ago
    That's a tree based molecule language with the parens right? This must be for organic molecules mostly then because you can repeat atoms as in, i.e. crystal molecules?
    - jballanc 10y ago
      SMILES is usable for any molecule (i.e. any compound with covalent bonds; crystals are generally not considered molecules), though it's most common use is for organic molecules. Parens indicate branching, and cycles are conceptually treated as branches that revisit the same atom twice.
- Coincoin 10y ago
  Yes and no. Yes the system is logical and systematic. However, there are tons of named groups and then there are groups of groups and they all have different and arbitrary priority rules. It's actually quite a clusterfuck for what it does and doesn't really have any real purpose on mildly complex molecules. Nobody in it's right mind will ever call it by it's real name except maybe to sound more intelligent. Most important molecule have short names either based on the standard or given names.

mcbits 10y ago

That's zenzizenziawful (doubleplusungood in modern notation).

andrepd 10y ago

That at least has a logical meaning, and you really can't simplify it because the thing it represents is that complicated. Using a complicated system of strange words to represent numbers is incomparably worse.

jballanc 10y ago
Meh...it's more of a relic of a weird transition point when chemists had the tools to discover complete structures but didn't have the tools to communicate them robustly other than "in words". These days most non-trivial chemicals are described using their "common name" (e.g. Cholesterol), and if you need a robust way of communicating structure there's SMILES (e.g. C[C@H](CCCC(C)C)[C@H]1CC[C@@H]2[C@@]1(CC[C@H]3[C@H]2CC=C4[C@@]3(CC[C@@H](C4)O)C)C for Cholesterol). Almost no one will attempt to parse SMILES for non-trivial molecules by hand, but almost every computational package can easily parse them.
- gleenn 10y ago
  That's a tree based molecule language with the parens right? This must be for organic molecules mostly then because you can repeat atoms as in, i.e. crystal molecules?
  - jballanc 10y ago
    SMILES is usable for any molecule (i.e. any compound with covalent bonds; crystals are generally not considered molecules), though it's most common use is for organic molecules. Parens indicate branching, and cycles are conceptually treated as branches that revisit the same atom twice.
Coincoin 10y ago
Yes and no. Yes the system is logical and systematic. However, there are tons of named groups and then there are groups of groups and they all have different and arbitrary priority rules. It's actually quite a clusterfuck for what it does and doesn't really have any real purpose on mildly complex molecules. Nobody in it's right mind will ever call it by it's real name except maybe to sound more intelligent. Most important molecule have short names either based on the standard or given names.