Enter elements in proper case, for example,
H for hydrogen not h
Cl for chlorine, neither CL, cl nor cL
Omit leading multipliers. For example, with water of
hydration enter
NaSO4(H2O)2 but not
NaSO4.2H2O
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The following abbreviations are recognized
| abbreviation | meaning |
|---|
| Me | methyl (CH3) |
| Et | ethyl (CH3CH2) |
| -- | note that Pr is not an abbreviation
since this is also the symbol for
element 59, Praseodymium |
| Bu | butyl, s-butyl, t-butyl (C4H9) |
| Am | amyl = pentyl (C5H11) |
| Ph | phenyl (C6H5) |
| Bn | benzyl (PhCH2) |
| Ac | acetyl (CH3CO) |
| Cp | cyclopentadienyl (C5H5) |
| Ts | p-toluenesulfonyl (tosyl) |
| Tf | trifluoromethanesulfonyl (trifyl) |
| Ms | methanesulfonyl (mesyl) |
| Aaa | standard amino acid residue
abbreviations, for example, Gly |
|