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 |
| Radical name |
Formula |
Based on rule no. |
|
Palmitoyl
(unsubstituted only) |
 |
C-404.1 |
| Pentacenyl |
 |
A-21.1, A-24.2 |
| Pentacontyl |
 |
A-1.2 |
| Pentacosyl |
 |
A-1.2 |
| Pentadecanoyl |
 |
C-403.1 |
| Pentadecyl |
 |
A-1.2 |
| Pentafluorothio |
 |
C-621.2 |
| Pentalenyl |
 |
A-21.1, A-24.2 |
| Pentamethylene |
 |
A-4.2 |
pentanedioyl,
see Glutaryl |
|
|
pentanoyl,
see Valeryl |
|
|
Pentapheneyl
(from pentaphene) |
 |
A-21.1, A-24.2 |
| Pentazolyl |
 |
B-1, B-5.11 |
| Pentenyl (2- shown) |
 |
A-3.5 |
| 2-Penten-4-ynyl |
 |
A-3.5 |
Pentyl
(replacing amyl) |
 |
A-1.2 |
tert-Pentyl
(unsubstituted only) |
 |
A-2.25 |
| Pentylidene |
 |
A-4.1 |
| Pentylidyne |
 |
A-4.1 |
| Pentyloxy |
 |
C-205.1 |
| Perchloryl |
 |
C-10.1, C-106.2 |
| Perimidinyl |
 |
B-2.11, B-5.11 |
| Perylenyl |
 |
A-21.1, A-24.2 |
| Phenacyl |
 |
C-318.1 |
| Phenacylidene |
 |
C-318.1 |
| Phenalenyl |
 |
A-21.1, A-24.2 |
| Phenanthridinyl |
 |
B-2.11, B-5.11 |
| Phenanthrolinyl |
 |
B-2.11, B-5.11 |
| Phenanthryl |
 |
A-24.2 |
| Phenanthrylene |
 |
A-24.4 |
| Phenarsazinyl |
 |
B-2.11, B-5.11 |
| Phenazinyl |
 |
B-2.11, B-5.11 |
| Phenethyl |
 |
A-13.3 |
| Phenetidino (o-, m-, or p-) |
 |
C-811.4 |
| Phenothiazinyl |
 |
B-2.11, B-5.11 |
| Phenoxathiinyl |
 |
B-2.11, B-5.11 |
| Phenoxazinyl |
 |
B-2.11, B-5.11 |
| Phenoxy |
 |
C-205.1 |
| Phenyl |
 |
A-13.1 |
| Phenylacetyl |
 |
C-12.7, C-404.1 |
| Phenylazo |
 |
C-912.3 |
| Phenylazoxy |
 |
C-913.1 |
| Phenylcarbrmoyl |
 |
C-431.2 |
| Phenylene |
 |
A-11.6 |
| Phenylenebisazo |
 |
C-912.5 |
| Phenylimino |
 |
C-815.3 |
2-phenylpropanoyl,
see Hydratropoyl |
|
|
3-phenylpropenoyl,
see Cinnamoyl |
|
|
| 3-Phenylpropyl |
 |
A-61.2 |
| Phenylsulfamoyl |
 |
C-661.2 |
| Phenylsulfinyl |
 |
C-631.1 |
| Phenylsulfonyl |
 |
C-631.1 |
| Phenylsulfonylamino |
 |
C-641.7, C-641.8, C-823.1 |
| Phenylthio |
 |
C-514.1 |
| 3-Phenylureido |
 |
C-971.2 |
| Phthalamoyl |
 (o-) |
C-431.1, C-431.2 |
| Phthalazinyl |
 |
B-2.11, B-5.11 |
| Phthalidyl |
 |
B-5.11, C-473.1 |
| Phthalidylidene |
 |
B-5.12, C-473.1 |
| Phthalimido |
 |
C-827.2 |
Phthaloyl
(preferred to 1,2-benzenedicarbonyl) |
(o-) |
C-404.1 |
Phytyl
[for (E)-(7R,11R)-3,7,11,15-tetramethyl-
2-hexadecenyl] |
 |
A-75.1 |
| Picenyl |
 |
A-21.1, A-24.2 |
| Picryl |
 |
C-202.2 |
Pimeloyl
(unsubstituted only) |
 |
C-404.1 |
| Pinanyl |
 |
A-72.1, A-75.2 |
| Pinanylene |
 |
A-72.1, A-75.2 |
| Pinanylidene |
 |
A-72.1, A-75.2 |
| Piperazinyl |
 |
B-2.12, B-5.11 |
| Piperidino (1-position only) |
 |
B-2.12, B-5.11 |
| Piperidyl |
 |
B-2.12, B-5.11 |
| Piperdylidene |
 |
B-5.12 |
| Piperonyl |
 |
(cfC-411.1) |
| Piperonylidene |
 |
(cfC-411.1) |
Piperonyloyl
(preferred to 3,4-methylenedioxybenzoyl) |
 |
C-411.1 |
Pivaloyl
(unsubstituted only) |
 |
C-404.1 |
| Pleiadenyl |
 |
A-21.1, A-24.2 |
| Polythio |
 |
C-515.1 |
| Prolyl |
 |
C-421.1 |
propanedioyl,
see Malonyl |
|
|
| Propane-1,3-diyl-2-ylidene |
 |
A-4.5 |
| Propane-1,2,3-triyl |
 |
A-4.5 |
propanoyl,
see Propionyl |
|
|
| Propan-1-yl-3-ylidene |
 |
A-4.4 |
propargyl,
see 2-Propynyl |
|
|
propenpyl,
see Acryloyl |
|
|
| 1-Propenyl |
 |
A-3.5 |
2-propenyl,
see Allyl |
|
|
| Propenylene |
 |
A-4.3 |
Propioloyl
(preferred to propynoyl) |
 |
C-404.1 |
| Propionamido |
 |
C-823.1 |
Propionyl
(preferred to propanoyl) |
 |
C-404.1 |
| Propionylamino |
 |
C-823.1 |
| Propionyloxy |
 |
C-463.3 |
| Propoxy |
 |
C-205.1 |
| Propyl |
 |
A-1.2 |
| Propylene |
 |
A-4.2 |
| Propylidene |
 |
A-4.1 |
| Propylidyne |
 |
A-4.1 |
propynoyl,
see Propioloyl |
|
|
| 1-Propynyl |
 |
A-3.5 |
| 2-Propynyl |
 |
A-3.5 |
Protocatechuoyl
(preferred to 3,4-dihydroxybenzoyl) |
 |
C-411.1 |
| Pteridinyl |
 |
B-2.11, B-5.11 |
| Purinyl |
 |
B-2.11, B-5.11 |
| Pyranthrenyl |
 |
A-21.1, A-24.2 |
| Pyranyl |
 |
B-2.11, B-5.11 |
| Pyranylidene |
 |
B-2.11, B-5.12 |
| Pyrazinyl |
 |
B-2.11, B-5.11 |
| Pyrazolidinyl |
 |
B-2.12, B-5.11 |
| Pyrazolinyl |
 |
B-2.12, B-5.11 |
| Pyrazolyl |
 |
B-2.11, B-5.11 |
| Pyrenyl |
 |
A-21.1, A-24.2 |
| Pyridazinyl |
 |
B-2.11, B-5.11 |
| 2-Pyridinecarbonyl |
 |
C-401.2, C-403.2 |
3-pyridinecarbonyl,
see Nicotinoyl |
|
|
4-pyridinecarbonyl,
see Isonicotinoyl |
|
|
| Pyridinio |
 |
C-82.1, C-85.1 |
| Pyridyl |
 |
B-2.11, B-5.11 |
| 2-Pyridylcarbonyl |
 |
C-403.2 |
| Pyridyloxy |
 |
C-205.1 |
| Pyrimidinyl |
 |
B-2.11, B-5.11 |
| Pyrrolidinyl |
 |
B-2.12, B-5.11 |
| Pyrrolinyl |
 |
B-2.12, B-5.11 |
| Pyrrolyl |
 |
B-2.11, B-5.11 |
| Pyruvoyl |
 |
C-416.3 |
