| Paclitaxel | M 552 |
| Paclitaxel, [2-benzoyl ring-d5]- 99% atom D | MD 101 |
| Paclitaxel, [2-benzoyl ring-13C(U), 99 atom % 13C]- | MG 113 |
| Paclitaxel, [2'-14C]- | MC 2627 |
| Paclitaxel, [2-benzoyl ring-14C(U)]- (50-100 mCi/mmol) | MC 1446 |
| Paclitaxel, [2-benzoyl ring-14C(U)]- (100-250 mCi/mmol) | MC 1446M |
| Paclitaxel, [2-benzoyl ring-14C(U)]- (>= 250 mCi/mmol) | MC 1446H |
| Paclitaxel, [3H]- (3-15 Ci/mmol) | MT 552 |
| Paclitaxel, [2,6-benzamido-3H]- (20-40 Ci/mmol) | MT 1646 |
| Paclitaxel, [13-3H]- | MT 2081 |
| Paclitaxel pentadecylglutarate, [benzoyloxy ring-14C(U)]- | MC 2353 |
| Pacritinib, [pyrrolidinylethoxy(benzyl)-14C]- | MC 2772 |
| Padsevonil, [3H]- | MT 2186 |
| Paeonol, [3H]- | MT 2058 |
| Palmitic acid, [1-14C]- | MC 121 |
| Palmitic acid, [9,10-3H]- | MT 845 |
| Palmitic acid, [9,10-3H]- | MT 845T |
| Palmitoleic acid, [1-14C]- | MC 2428 |
| Palmitoyl Coenzyme A, [palmitoyl-1-14C]- | MC 304 |
| 1-Palmitoyl-2-docosahexaenoyl-sn-glycero-3-phosphocholine | MT 2051 |
| Palmitoylethanolamide | M 1891 |
| Palmitoyl ethanolamide, [9,10-3H]- | MT 1505 |
| N-Palmitoylethanolamine, [ethanolamine-1,2-3H]- | MT 1866 |
| N-Palmitoyl-D-sphingosine, [palmitoyl-1-14C]- | MC 2006 |
| Paraformaldehyde, [14C]- | MC 1334 |
| Paraformaldehyde, [14C]- | MC 1334H |
| Paraoxon, [ring-14C]- | MC 2608 |
| Paromomycin, [3H]- | MT 1673 |
| Pefurazoate, [methylfuran-14C]- | MC 2299 |
| Penciclovir standard | M 972 |
| Penciclovir, [8-3H]- | MT 972 |
| Pendimethalin, [3-pentyl-14C]- | MC 2589 |
| Pentagastrin, [3H]- | MT 882 |
| Pentamidine, [3H]- | MT 822 |
| Pentamidine isethionate | M 1881 |
| 3-[2-(Ethylsulfinyl)propyl]-Pentanedioic acid, [methyl-14C]- | MC2752 |
| Pentanedione, [2,4-14C]- | MC 2288 |
| Pentanoic acid, sodium salt, [1-14C]- | MC 2609 |
| Pentetrazol, [5-14C]- | MC 2685 |
| Pentostatin, [3H]- | MT 710 |
| Permethrin, [benzyl ring-14C(U)]- | MC 2551 |
| cis-Permethrin, [phenyl-14C]- | MC 2654 |
| cis,trans-Permethrin, [3H]- | MT 2181 |
| trans-Permethrin, [phenyl-14C]- | MC 2653 |
| Persantine, [piperidyl-3H]- Discontinued | MT 807 |
| Phenanthrene, [9-14C]- | MC 1178 |
| Phenol, [14C(U)]- | MC 235 |
| Phenoxybenzamine HCl, [phenoxy-14C(U)]- | MC 2694 |
| 2-Phenoxyethanol, [14C]- | MC 2811 |
| 2-Phenylacetamido-4-carbamido butyric acid, [phenyl-14C(U)]- | MC 2406 |
| Phenylacetic acid, [acetate-1,2-14C]- | MC 1449 |
| Phenylacetic acid, [ring-14C(U)]- | MC 2346 |
| D-Phenylalanine, [ring-14C(U)]- | MC 2239 |
| L-Phenylalanine | M 1888 |
| L-Phenylalanine, [14C(U)]- | MC 262 |
| L-Phenylalanine, [ring-14C(U)]- | MC 2159 |
| L-Phenylalanine, [ring-2,4-3H]- | MT 1916 |
| L-Phenylalanine, [ring-2,6-3H]- | MT 903 |
| D-Phenylalanylamide, [ring-14C(U)]- | MC 2305 |
| Phenylboronic acid, [ring-14C]- | MC 2192 |
| Phenylbutyric acid, [phenyl-14C(U)]- | MC 2421 |
| N,N'-[1,4-Phenylenebis(methylene)]dipyrimidin-2-amine, [pyrimidine-5-3H(N)]- | MT 1944 |
| Phenylephrine, [3H]- | MT 2107 |
| 1,2-Phenylenediamine, [13C6]- | MG 123 |
| Phenylhydrazine, hydrochloride, [14C(U)]- | MC 1153 |
| (-)-N6-(2-Phenylisopropyl)-adenosine, [3H]- | MT 755 |
| o-Phenyl phenol, [phenol-14C(U)]- | MC 2644 |
| N-Phenylpivalamide, [phenyl-14C(U)]- | MC 2536 |
| 4-Phenyl-2-propionamidotetralin, [carbonyl-14C]- | MC 2629 |
| 3-Phenylpropionic acid, [carbonyl-14C]- | MC 2271 |
| 3-(Phenylsulfonyl)-8-(piperazin-1-yl)quinoline, [phenyl-14C(U)]- | MC 2798 |
| Phenytoin, [3H]- | MT 1862 |
| Phenytoin, [3H]- | MT 1862L |
| (+)-PHNO, [propyl-2,3-3H]- | MT 1873 |
| (+)-PHNO, [propyl-2,3-3H]- | MT 1873L |
| Phosgene, [14C]- | MC 1336 |
| Phosphamidon, [1,3-14C]- | MC 236 |
| Phosphocreatine, [4-14C]- | MC 237 |
| 2-Phosphonomethyl pentanedioic acid, [3H]- | MT 1933 |
| 9-(2-Phosphonylmethoxyethyl)-adenine | M 703 |
| 9-(2-Phosphonylmethoxyethyl)-adenine, [adenine-8-14C]- | MC 303 |
| 9-(2-Phosphonylmethoxyethyl) adenine, [adenine-2,8-3H]- | MT 703 |
| 9-(2-Phosphonylmethoxyethyl)-2,4-diaminopurine (PMEDAP) | M 1579 |
| 9-(2-Phosphonylmethoxyethyl)-2,4-diaminopurine, [8-3H]- | MT 1664 |
| 9-(2-Phosphonylmethoxyethyl)-guanine | M 976 |
| 9-(2-Phosphonylmethoxyethyl)-guanine, [guanine-8-14C]- | MC 2231 |
| 9-(2-Phosphonylmethoxyethyl)-guanine, [guanine-8-3H]- | MT 976 |
| (R)-9-(2-Phosphonylmethoxypropyl)-adenine, [adenine-8-14C]- | MC 1102 |
| (R)-9-(2-Phosphonylmethoxypropyl)-adenine | M 1502 |
| (R)-9-(2-Phosphonylmethoxypropyl)-adenine, [adenine-2,8-3H]- | MT 1502 |
| 9-(2-Phosphonylmethoxypropyl)-2,4-diaminopurine, [8-3H]- | MT 1663 |
| 9-(2-Phosphonylmethoxypropyl)-2,4-diaminopurine diphosphate, tetraammonium salt | M 1905 |
| Phthalic acid, [1,2-carboxyl-14C]- | MC 1419 |
| Phthalic acid, [2,3,4,5-3H]- | MT 948 |
| Phytanic acid, [2,3-3H]- (Discontinued) | MT 1650 |
| Phytol, [1-3H]- | MT 1625 |
| PIB, [3H]- | MT 2104 |
| Piclamilast, [methoxy-3H]- (Discontinued) | MT 2118 |
| Piclamilast, [3H]- | MT 2156 |
| Picloram, [2,6-14C]- | MC 2249 |
| Picolinafen, [trifluoromethylphenyl-14C(U)]- | MC 2512 |
| Picolinic acid, [3H]- | MT 528 |
| Pigment Red 22, [phenyl-14C(U)]- | MC 2727 |
| Pigment Yellow 83, [bisphenyl-14C(U)]- | MC 2714 |
| 1-Piperidinecarbonyl chloride, [carbonyl-14C]- | MC 2306 |
| Piperonyl butoxide, [phenyl ring-14C(U)]- | MC 2641 |
| Pirfenidone, [benzene ring-14C(U)]- | MC 1435 |
| Pivalic acid, [1-14C]- | MC 417 |
| Plecanatide, [3H]- | MT 2173 |
| Plerixafor, [cyclam-3H]- | MT 2137 |
| PMEA | M 703 |
| PMEA, [adenine-8-14C]- | MC 303 |
| PMEA, [adenine-2,8-3H]- | MT 703 |
| PMEAP | M 1727 |
| PMEAPP | M 1728 |
| PMEDAP | M 1579 |
| PMEG | M 976 |
| PMEG, [guanine-8-14C]- | MC 2231 |
| PMEG, [guanine-8-3H]- | MT 976 |
| PMPA (Tenofovir) | M 1502 |
| PMPA, [adenine-8-14C]- | MC 1102 |
| PMPA, [adenine-2,8-3H]- | MT 1502 |
| PMPAP | M 1729 |
| PMPAPP | M 1731 |
| PMPDAP-P, triammonium salt | M 1906 |
| PMPDAP-PP, tetraammonium salt | M 1905 |
| Podophyllotoxin, [3H]- | MT 702 |
| Podophyllotoxin derivative, [3H]- (VP-16-213, [3H]-) (Etoposide, [3H]-) | MT 786 |
| Poloxamer 407, [14C]- | MC 2716 |
| Polyacrylic acid, [carbonyl-14C(U)]- | MC 2656 |
| Porfiromycin, [methyl-3H]- (Discontinued) | MT 542 |
| Potassium cyanate, [14C]- | MC 1339 |
| Potassium cyanate, [14C]- | MC 1339H |
| Potassium cyanide, [14C]- (Discontinued) | MC 255 |
| Potassium ethylxanthate, [thiocarbonyl-14C]- | MC 2437 |
| Potassium lauryl hydroxamate, [1-14C]- | MC 2356 |
| Potassium octyl hydroxamate, [1-14C]- | MC 2355 |
| Potassium thiocyanate, [14C]- | MC 243 |
| Poziotinib, hydrochloride, [14C]- | MC 2818 |
| 4-P-PDOT, [carbonyl-14C]- | MC 2629 |
| Pradefovir mesylate, [6-14C]- | MC 2754 |
| Praziquantel, [cyclohexylcarbonyl-14C]- | MC 2316 |
| Probucol, [isopropylidene-2-14C]- (Discontinued) | MC 419 |
| Probucol, [35S]- (Discontinued) | MS 104 |
| Prochloraz, [phenyl-14C(U)]- | MC 2331 |
| L-Proline, [14C(U)]- | MC 263 |
| L-Proline, [2,3,4,5-3H]- | MT 522 |
| L-Proline, [2,3,4,5-3H]- | MT 522E |
| L-Proline, [2,3,4,5-3H]- | MT 522M |
| Propaquizafop, [14C]- | MC 2648 |
| Propaquizafop, [quinoxaline-14C]- | MC 2647 |
| 4'-(Propionamidomethyl)fluorescein, [3-3H]- | MT 2018 |
| Propionic acid, sodium salt, [1-14C]- | MC 201 |
| Propionic acid, sodium salt, [2-14C]- | MC 415 |
| 3-O-Propionyl-L-carnitine hydrochloride, [N-methyl-3H(N)]- (Discontinued) | MT 1541 |
| Propionyl coenzyme A, [1-14C]- | MC 1148 |
| Propisochlor, [ring-14C(U)]- | MC 2665 |
| Propylene glycol, [1-14C]- | MC 2701 |
| Propylene oxide, [1-14C]- | MC 475 |
| (+)-4-Propyl-9-hydroxynaphthoxacine, [propyl-2,3-3H]- | MT 1873 |
| 2-Propylpentanoic acid, sodium salt, [4,5-3H]- (Valproic acid, sodium salt, [4,5-3H]-) | MT 556 |
| 5-Propynylcytidine | M 1805 |
| 5-Propynyl-2'-deoxycytidine | M 1768 |
| 5-Propynyl-2'-deoxyuridine | M 1769 |
| 5-Propynyluridine | M 1806 |
| Prostaglandin A1, [3H]- | MT 2114 |
| Prostaglandin E1, [3H]- | MT 2113 |
| Protein hydrolysate, [14C(U)]- | MC 264 |
| Prothiofos, [phenyl-14C]- | MC 2652 |
| Pseudothymidine, [methyl-3H]- | MT 1902 |
| D-Psicose, [3H]- | MT 2086 |
| Puerarin, [3H]- | MT 2052 |
| Puromycin dihydrochloride, [8-3H(N)]- | MT 785 |
| Putrescine dihydrochloride, [1,4-14C]- (Discontinued) | MC 1115 |
| Putrescine dihydrochloride, [2,3-3H(N)]- (Discontinued) | MT 1510 |
| Pyrazole carboxamidine hydrochloride, [carboxamidine-14C]- | MC 2251 |
| Pyrene, [4,5,9,10-14C]- | MC 2416 |
| Pyridine, sulfate salt, [2-14C]- | MC 2139 |
| 4-Pyridinecarboxaldehyde, [carbonyl-14C]- | MC 2182 |
| N-[4-(3,5-Dimethylphenyl)-5-(4-pyridinyl)-2-thiazolyl]-3-pyridinecarboxamide, [3H]- | MT 2174 |
| 2-Pyridinecarboxylic acid, [3H]- | MT 528 |
| 4-Pyridylcarbinol N-oxide, [methylene-14C]- | MC 2094 |
| alpha-(Pyridyl-1-oxide)-N-tert-butylnitrone, [pyridyl methylene-14C]- | MC 1443 |
| 4,6-Pyrimidine dicarboxylic acid, [2-14C]- | MC 2173 |
| Pyrimidine hydrochloride, [2-14C]- | MC 2394 |
| Pyroglutamic acid, [2,3,4-3H]- | MT 1522 |
| 2-Pyrrolidone, [5-14C]- | MC 2058 |
| Pyruvic acid, sodium salt, [1-14C]- (Discontinued) | MC 1117 |
| Pyruvic acid, sodium salt, [2-14C]- (Discontinued) | MC 1343 |
| Pyruvic acid, sodium salt, [2,3-14C]- | MC 2655 |