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| Imipramine CAS No. 50-49-7 C19H24N2 M.W. 280.41 I-011
 | | | Imipramine-d3 HCl CAS No. 65100-49-4 C19H21N2D3.HCl M.W. 283.43 36.46 I-012
 |
| Imipiramine-d4 CAS No. 50-49-7(non-d C19H20N2D4 M.W. 284.44 I-013
 | | | Imipiramine N-Oxide C19H24N2O M.W. 296.42 I-014
 |
| N-Desmethyl Imipramine HCl C18H22N2.HCl M.W. 266.39 36.46 I-015
 | | | Imipramine HCl CAS No. 113-52-0 C19H24N2.HCl M.W. 280.42 36.46 I-016
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| Imipramine Impurity B HCl C19H22N2. HCl M.W. 278.40 36.46 I-017
 | | | Imipramine Pamoate CAS No. 10075-24-8 C40H50N2. C23H16O6 M.W. 558.86 388.38 I-018
 |
| Irbesartan CAS No. 138402-11-6 C25H28N6O M.W. 428.54 I-021
 | | | Irbesartan-d4 CAS No. 138402-11-6(non-d) C25H24D4N6O M.W. 432.57 I-022
 |
| Irbesartan N2-Glucuronide C31H36N6O7 M.W. 604.67 I-023
 | | | Irbesartan Impurity CAS No. N/A C24H26N6O M.W. 414.51 I-024
 |
| Irbesartan Related Compound A CAS No. 748812-53-5 C25H30N6O2 M.W. 446.56 I-025
 | | | Irbesartan N-Trityl Impurity CAS No. N/A C44H42N6O M.W. 670.86 I-026
 |
| Irbesartan Bromo Impurity CAS No. N/A C34H29BrN4 M.W. 573.54 I-027
 | | | Itraconazole CAS No. 84625-61-6 C35H38Cl2N8O4 M.W. 705.65 I-031
 |
| Itraconazole Impurity B C35H38Cl2N8O4 M.W. 705.65 I-0310
 | | | Itraconazole Epimer C35H38Cl2N8O4 M.W. 705.65 I-0311
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| Itraconazole-d3 CAS No. 84625-61-6(non-d) C35H35D3Cl2N8O4 M.W. 708.67 I-032
 | | | Itraconazole-d5 CAS No. 84625-61-6(non-d) C35H33D5Cl2N8O4 M.W. 710.66 I-033
 |
| Hydroxy Itraconazole CAS No. 112559-91-8 C35H38Cl2N8O5 M.W. 721.65 I-034
 | | | Keto Itraconazole C35H36Cl2N8O5 M.W. 719.63 I-035
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| Itraconazole-d9 C35H29Cl2N8O4D9 M.W. 714.70 I-036
 | | | Hydroxy Itraconazole-d8 (mixture of diastereomers) C35H30Cl2N8O5D8 M.W. 729.70 I-037
 |
| Itraconazole Impurity G C43H39Cl4N11O6 M.W. 947.67 I-038
 | | | Itraconazole Didioxolanyl analog C43H39Cl4N11O6 M.W. 947.67 I-039
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| Ibuprofen-d3 CAS No. 121662-14-4 C13H15O2D3 M.W. 209.30 I-041
 | | | Ibuprofen Impurity D CAS No. N/A C10H12O2 M.W. 164.21 I-0410
 |
| Ibuprofen Impurity E C12H16O M.W. 176.26 I-0411
 | | | Ibuprofen Impurity F CAS No. 65322-85-2 C13H18O2 M.W. 206.29 I-0412
 |
| Ibuprofen Impurity M C13H18O3 M.W. 222.29 I-0413
 | | | Ibuprofen Impurity N CAS No. 3585-52-2 C11H14O2 M.W. 178.23 I-0414
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| Ibuprofen Impurity O C13H18O2 M.W. 206.29 I-0415
 | | | Ibuprofen Impurity J C13H16O3 M.W. 220.27 I-0416
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| cis-Ibuprofen Impurity G CAS No. N/A C26H32O4 M.W. 408.54 I-0417
 | | | (2SR)-2-(4-Isobutylphenyl)-N-((SR)-1-Phenylethyl)Propanamide C21H27NO M.W. 309.46 I-0418
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| (2SR)-2-(4-Isobutylphenyl)-N-((RS)-1-Phenylethyl)Propanamide C21H27NO M.W. 309.46 I-0419
 | | | Ibuprofen Acyl Glucuronide C19H26O8 M.W. 382.41 I-042
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| 1-(4-Isobutylphenyl)Ethanol C12H18O M.W. 178.28 I-0420
 | | | 4-Isobutylstyrene CAS No. 63444-56-4 C12H16 M.W. 160.26 I-0421
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| 1-Ethyl-4-Isobutylbenzene C12H18 M.W. 162.28 I-0422
 | | | 2-(4-Isobutylphenyl)Propionitrile C13H17N M.W. 187.29 I-0423
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| 2-(4-Isopropylphenyl)Acrylic Acid C13H16O2 M.W. 204.27 I-0424
 | | | 2-(4-n-Propylphenyl)Propanoic Acid C12H16O2 M.W. 192.26 I-0425
 |
| 1,3-Dihydroxyprop-2-yl 2-(4-Isobutylphenyl)Propanonate C16H24O4 M.W. 280.37 I-0426
 | | | 2,3-Dihydroxypropyl 2-(4-Isobutylphenyl)Propanoate C16H24O4 M.W. 280.37 I-0427
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| 2-Hydroxyibuprofen CAS No. 51146-55-5 C13H18O3 M.W. 222.29 I-0428
 | | | 2-Hydroxypropyl 2-(4-Isobutylphenyl)Propanoate C16H24O3 M.W. 264.37 I-0429
 |
| Ibuprofen lysinate CAS No. 57469-76-8 C13H18O2.C6H14N2O2 M.W. 206.29 146.19 I-043
 | | | 1-Hydroxyprop-2-yl 2-(4-Isobutylphenyl)Propanoate C16H24O3 M.W. 264.37 I-0430
 |
| 4-Isobutyrylacetophenone C12H14O2 M.W. 190.24 I-0431
 | | | 4-Isopropylacetophenone C11H14O M.W. 162.23 I-0432
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| Ibuprofen Impurity A C13H18O2 M.W. 206.29 I-0433
 | | | Ibuprofen Impurity H C24H32O M.W. 336.52 I-0434
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| Ibuprofen Impurity I C24H34 M.W. 322.54 I-0435
 | | | Ibuprofen Impurity K CAS No. 43153-07-7 C10H10O3 M.W. 178.19 I-0436
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| Ibuprofen Impurity L CAS No. 53949-53-4 C13H18O3 M.W. 222.29 I-0437
 | | | Ibuprofen Impurity P CAS No. 36039-36-8 C13H20O M.W. 192.30 I-0438
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| Ibuprofen Impurity R C22H30 M.W. 294.48 I-0439
 | | | S-Ibuprofen-Acyl-â-D-Glucuronide C19H26O8 M.W. 382.41 I-044
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| Ibuprofen Impurity Q C12H18O M.W. 178.28 I-0440
 | | | Ibuprofen Methyl Ester C14H20O2 M.W. 220.31 I-0441
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| Isopropyl 2-(4-Isobutylphenyl)Propanonate C16H24O2 M.W. 248.37 I-0442
 | | | trans-Ibuprofen Impurity G CAS No. 1391054-15-1 C26H32O4 M.W. 408.54 I-0443
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| rac-Ibuprofen Impurity G CAS No. 1391054-15-1 C26H32O4 M.W. 408.54 I-0444
 | | | Ibuprofen Carboxylic Acid CAS No. 15935-54-3 C13H16O4 M.W. 236.27 I-0445
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| (S)-Ibuprofen-d3 C13H15O2D3 M.W. 209.31 I-0446
 | | | (R)-Ibuprofen-d3 C13H15O2D3 M.W. 209.31 I-0447
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| S-Ibuprofen CAS No. 51146-56-6 C13H18O2 M.W. 206.29 I-045
 | | | R-Ibuprofen CAS No. 51146-57-7 C13H18O2 M.W. 206.29 I-046
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| Ibuprofen-13C-d3 C13H15O2D3 M.W. 210.29 I-047
 | | | Ibuprofen Impurity B CAS No. 3585-49-7 C13H18O2 M.W. 206.29 I-048
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| Ibuprofen Impurity C CAS No. 59512-17-3 C13H19NO M.W. 205.30 I-049
 | | | Indoramine CAS No. 26844-12-2 C22H25N3O M.W. 347.46 I-051001
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| Indoramine-d5 CAS No. 26844-12-2(non-d) C22H20N3OD5 M.W. 352.49 I-051002
 | | | 6-Hydroxy Indoramin C22H25N3O2 M.W. 363.46 I-051003
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| 6-Hydroxy Indoramin-d5 C22H20N3O2D5 M.W. 368.49 I-051004
 | | | Isothipendyl CAS No. 482-15-5 C16H19N3S M.W. 285.41 I-052001
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| Ilaprazole CAS No. 172152-36-2 C19H18N4O2S M.W. 366.44 I-053001
 | | | Ilaprazole-d3 CAS No. N/A C19H15N4O2SD3 M.W. 369.46 I-053002
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| 2-(4-Acetyl-benzyl)-butyraldehyde C14H16O2 M.W. 216.28 I-054001
 | | | 2-(4-Formyl-phenyl)-propionic acid CAS No. 43153-07-7 C10H10O3 M.W. 178.19 I-054002
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| 4-(1-Carboxy-ethyl)-benzoic acid CAS No. 67381-50-4 C10H10O4 M.W. 194.19 I-054003
 | | | 6-[4-(1-Carboxy-ethyl)-phenyl]-6-oxo-hexanoic acid C15H18O5 M.W. 278.31 I-054004
![6-[4-(1-Carboxy-ethyl)-phenyl]-6-oxo-hexanoic acid](product_images/I-054004.jpg) |
| 6-[4-(1-Carboxy-ethyl)-phenyl]-5-oxo-hexanoic acid C15H18O5 M.W. 278.31 I-054005
![6-[4-(1-Carboxy-ethyl)-phenyl]-5-oxo-hexanoic acid](product_images/I-054005.jpg) | | | Idarubicin C26H27NO9 M.W. 497.51 I-055001
 |
| Idarubicin-d3 C26H24NO9D3 M.W. 500.52 I-055002
 | | | Idarubicinol C26H29NO9 M.W. 499.52 I-055003
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| Idarubicinol-d3 C26H26NO9D3 M.W. 502.54 I-055004
 | | | Iprodione-d3 CAS No. 36734-19-7 C13H10Cl2N3O3D3 M.W. 333.19 I-061
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| Isradipine-d7 CAS No. 75695-93-1 (non-d) C19H14N3O5D7 M.W. 378.44 I-081
 | | | Isradipine Impurity C CAS No. N/A C17H17N3O5 M.W. 343.34 I-0810
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| Isradipine Impurity E CAS No. N/A C26H23N5O6 M.W. 501.50 I-0811
 | | | Isradipine Impurity B C21H25N3O5 M.W. 399.45 I-0812
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| Isradipine CAS No. 75695-93-1 C19H21N3O5 M.W. 371.40 I-082
 | | | Isradipine d CAS No. 75695-93-1(non-d) C19H15N3O5D6 M.W. 377.43 I-083
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| Isradipine d3 CAS No. 75695-93-1(non-d) C19H18N3O5D3 M.W. 374.41 I-084
 | | | Isradipine lactone CAS No. 1076198-34-9 C18H17N3O5 M.W. 355.35 I-085
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| Dehydro isradipine C19H19N3O5 M.W. 369.38 I-086
 | | | Dehydro Isradipine Lactone CAS No. 107699-91-1 C18H15N3O5 M.W. 353.34 I-087
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| Dehydro Isradipine HCl C19H19N3O5.HCl M.W. 369.38 36.46 I-088
 | | | Isradipine Impurity A CAS No. N/A C18H19N3O5 M.W. 357.37 I-089
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| Imatinib CAS No. 152459-95-5 C29H31N7O M.W. 493.62 I-091
 | | | Imatinib Mesylate Impurity E CAS No. N/A C52H48N12O2 M.W. 873.04 I-0910
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| Imatinib meta-Methyl-Piperazine Impurity CAS No. 1246819-59-9 C29H31N7O M.W. 493.62 I-0911
 | | | Imatinib intermediate (N-[4-Methyl-3-(4-pyridin-3-yl-pyrimidin-2-ylamino)-phenyl]-4-Chloromethyl Benzamide) CAS No. 404844-11-7 C24H20ClN5O M.W. 429.91 I-0912
![Imatinib intermediate (N-[4-Methyl-3-(4-pyridin-3-yl-pyrimidin-2-ylamino)-phenyl]-4-Chloromethyl Benzamide)](product_images/I-0912.jpg) |
| Imatinib Impurity C CAS No. 152460-10-1 C16H15N5 M.W. 277.33 I-0913
 | | | Imatinib-d8 CAS No. 152459-95-59 (non-d) C29H23N7OD8 M.W. 501.66 I-092
 |
| N-Desmethyl Imatinib CAS No. 404844-02-6 C28H29N7O M.W. 479.59 I-093
 | | | N-Desmethyl Imatinib-d8 CAS No. 404844-02-6 (non-d) C28H21N7OD8 M.W. 487.64 I-094
 |
| Imatinib Mesylate Impurity D (Imatinib piperazine n-oxide) CAS No. N/A C29H31N7O2 M.W. 509.62 I-095
 | | | Imatinib Mesylate Impurity A (Imatinib pyridine n-oxide) CAS No. N/A C29H31N7O2 M.W. 509.62 I-096
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| Imatinib Mesylate C29H31N7O.CH4O3S M.W. 493.62 96.11 I-097
 | | | Imatinib Mesylate Impurity B CAS No. N/A C29H31N7O3 M.W. 525.62 I-098
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| Imatinib Mesylate Impurity C CAS No. N/A C29H31N7O2 M.W. 509.62 I-099
 | | | Tetramethyl ibandronate C13H31NO7P2 M.W. 375.34 I-101
 |
| Ibandronic Acid CAS No. 114084-78-5 C9H23NO7P2 M.W. 319.23 I-102
 | | | Ibandronic Acid-d3 CAS No. 114084-78-5 (non-d) C9H20NO7P2D3 M.W. 322.23 I-103
 |
| Ibandronate Sodium C9H22NO7P2.Na M.W. 318.23 22.99 I-104
 | | | Ibandronate sodium impurity A CAS No. 953805-81-7 C8H20NNaO7P2 M.W. 327.18 I-105
 |
| Ibandronic Acid Impurity HCl C9H19NO2.HCl M.W. 173.26 36.46 I-106
 | | | Ipratropium-d3 Bromide CAS No. 22254-24-6 (non-d) C20H27NO3D3.Br M.W. 335.51 79.90 I-111
 |
| Indomethacin CAS No. 53-86-1 C20H17ClO4 M.W. 356.81 I-121
 | | | Indomethacin-d4 CAS No. 53-86-1 (non-d) C20H13ClO4D4 M.W. 360.83 I-122
 |
| Indomethacin acyl glucuronide C26H25ClO10 M.W. 532.94 I-123
 | | | O-Desmethyl Indomethacin C19H15ClO4 M.W. 342.78 I-124
 |
| Indomethacin Diamide CAS No. 402849-25-6 C33H27Cl2N3O6 M.W. 616.51 I-125
 | | | Indapamide-d3 C16H13ClN3O3SD3 M.W. 368.86 I-131
 |
| Indapamide Impurity CAS No. N/A C16H15ClN2O3S M.W. 350.83 I-1310
 | | | Indapamide C16H16ClN3O3S M.W. 365.84 I-1311
 |
| Indapamide Impurity (4-Chloro-3-Sulphamoylbenzoic Acid) CAS No. 1205-30-7 C7H6ClNO4S M.W. 235.65 I-1312
 | | | Indapamide Impurity B (1-Amino-2-Methylindoline HCl) CAS No. 31529-47-2 C9H12N2. HCl M.W. 148.21 36.46 I-1313
 |
| Indapamide-d5 C16H11ClN3O3SD5 M.W. 370.86 I-132
 | | | 5-OH-Indapamide C16H16ClN3O4S M.W. 381.84 I-133
 |
| 5-OH-Indapamide-d3 C16H13ClN3O4SD3 M.W. 384.86 I-134
 | | | 5-OH-Indapamide-d5 C16H11ClN3O4SD5 M.W. 386.86 I-135
 |
| Dehydro indapamide C16H14ClN3O3S M.W. 363.83 I-136
 | | | Indapamide sulfate C16H14ClN3O6S2 M.W. 443.89 I-137
 |
| Indapamide glucuronide C22H22ClN3O9S M.W. 539.95 I-138
 | | | Indapamide Impurity A CAS No. NA C9H10N2O M.W. 162.19 I-139
 |
| Imidapril CAS No. 89371-37-9 C20H27N3O6 M.W. 405.45 I-141
 | | | Imidaprilat C18H23N3O6 M.W. 377.40 I-142
 |
| Idebenone CAS No. 58186-27-9 C19H30O M.W. 338.45 I-151
 | | | Idebenone Sulfate CAS No. N/A C19H30O8S M.W. 418.51 I-1510
 |
| Idebenone-d6 CAS No. 58186-27-9 (non-d) C19H24O5D6 M.W. 344.48 I-152
 | | | QS-4 CAS No. 58186-01-9 C13H16O6 M.W. 268.27 I-153
 |
| 2H-QS-4 C13H18O6 M.W. 270.28 I-154
 | | | 2H-QS-4 Sulfate CAS No. 95233-65-1 C13H18O9S M.W. 350.35 I-155
 |
| QS-4-d6 CAS No. 58186-01-9 (non-d) C13H10O6D6 M.W. 274.31 I-156
 | | | 2H-QS-4-d6 C13H12O6D6 M.W. 276.32 I-157
 |
| 2H-QS-4-d4 Sulfate CAS No. 95233-65-1 C13H12O9SD6 M.W. 356.38 I-158
 | | | Idebenone-D-Glucuronide CAS No. N/A C25H38O11 M.W. 514.58 I-159
 |
| 4-Oxo-Isotretinoin C20H26O3 M.W. 314.43 I-161
 | | | Isotretinoin-d5 CAS No. 4759-48-2 (non-d) C20H23O2D5 M.W. 305.48 I-163
 |
| Isotretinoin glucuronide C26H36O8 M.W. 476.57 I-164
 | | | Isotretinoin (13-cis-Retinoic Acid) C20H28O2 M.W. 300.44 I-165
 |
| L-Isoproterenol Sulphate 2 C11H17NO3.H2O4S M.W. 2 211.26 98.08 I-171
 | | | Irinotecan-d10 hydrochloride trihydrate CAS No. 136572-09-3 (non-d) C33H28N4O6D10.HCl.3 H2O M.W. 596.75 36.46 3 18.02 I-181
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| Irinotecan C33H38N4O6 M.W. 586.69 I-182
 | | | Irinotecan Hydroxyl Acid C33H40N4O7 M.W. 604.71 I-183
 |
| SN-38 Hydroxy Acid C22H22N2O6 M.W. 410.43 I-184
 | | | SN-38 Glucuronide C28H28N2O11 M.W. 568.54 I-185
 |
| Irinotecan 11-Desethyl Impurity CAS No. N/A C31H34N4O6 M.W. 558.64 I-186
 | | | Irinotecan 8-Ethyl Impurity CAS No. N/A C35H42N4O6 M.W. 614.75 I-187
 |
| Isosorbide 5-Mononitrate Glucuronide C12H17NO12 M.W. 367.26 I-191
 | | | Isosorbide-13C6 5-Mononitrate C6H9NO6 M.W. 197.07 I-192
 |
| Isosorbide 5-Mononitrate C6H9NO6 M.W. 191.14 I-193
 | | | Isopropamide Iodide CAS No. 71-81-8 C23H33N2O.I M.W. 353.53 126.90 I-201
 |
| Dimethylheptene Methylamine HCl (Isometheptene HCl) CAS No. 6168-86-1 C9H19N.HCl M.W. 141.26 36.46 I-211
 | | | Isometheptane Tartrate (Dimethylheptene Methylamine Tartrate) CAS No. 5984-50-9 C9H19N.C4H6O6 M.W. 141.26 150.09 I-212
 |
| Isoniazid CAS No. 54-85-3 C6H7N3O M.W. 137.14 I-221
 | | | Isoniazid-d4 CAS No. 774596-24-6 C6H3N3OD4 M.W. 141.17 I-222
 |
| Isonicotinoyl-d4 Hydrazide C6H3N3OD4 M.W. 141.17 I-231
 | | | Inositol C6H12O6 M.W. 180.16 I-241
 |
| Iloperidone-13C-d3 CAS No. 133454-47-4 (non-d) C24H24FN2O4D3 M.W. 430.50 I-251
 | | | Iloperidone-13C-d3 Metabolite P95 C22H22FN2O513CD3 M.W. 432.47 I-2510
 |
| Desfluoro Iloperidone CAS No. N/A C24H28N2O4 M.W. 408.50 I-2511
 | | | Iloperidone Metabolite P88 (R-Isomer) CAS No. N/A C24H29FN2O4 M.W. 428.51 I-2512
 |
| Iloperidone Metabolite P88 (S-Isomer) CAS No. N/A C24H29FN2O4 M.W. 428.51 I-2513
 | | | Iloperidone Metabolite P88 Glucuronide C30H37FN2O10 M.W. 604.64 I-2514
 |
| Iloperidone Metabolite P88 N-Oxide C24H29FN2O5 M.W. 444.51 I-2515
 | | | Iloperidone-d6 CAS No. 133454-47-4 (non-d) C24H21FN2O4D6 M.W. 432.52 I-252
 |
| Iloperidone CAS No. 133454-47-4 C24H27FN2O4 M.W. 426.49 I-253
 | | | Iloperidone Metabolite P88 CAS No. 133454-55-4 C24H29FN2O4 M.W. 428.51 I-254
 |
| Iloperidone-d3 metabolite P88 C24H26FN2O4D3 M.W. 431.53 I-255
 | | | Iloperidone metabolite P95 CAS No. 475110-48-6 C23H25FN2O5 M.W. 428.46 I-256
 |
| Iloperidone-d3 metabolite P95 C23H22FN2O5D3 M.W. 431.48 I-257
 | | | Iloperidone Impurity C36H39FN4O5 M.W. 626.73 I-258
 |
| Iloperidone-13C-d3 Metabolite P88 C24H26FN2O4D3 M.W. 432.52 I-259
 | | | Imidocarb Dipropionate C19H20N6O.2 C3H6O2 M.W. 348.41 2 74.08 I-261
 |
| Ammonium Iron (III) Citrate C6H8O7.X Fe.Y H3N M.W. 192.13 X 55.85 Y 17.03 I-271
 | | | Itopride HCl C20H26N2O4.HCl M.W. 358.44 36.46 I-281
 |
| Itopride N-Oxide CAS No. 141996-98-7 C20H26N2O5 M.W. 374.44 I-282
 | | | Isoconazole Nitrate CAS No. 24168-96-5 C18H14Cl4N2O.HNO3 M.W. 479.15 I-291
 |
| Isoconazole Impurity A CAS No. 24155-42-8 C11H10Cl2N2O M.W. 257.12 I-292
 | | | Isoconazole Impurity B C15H13Cl4NO M.W. 365.09 I-293
 |
| Isoconazole Impurity C (Miconazole) CAS No. 22916-47-8 C18H14Cl4N2O M.W. 416.14 I-294
 | | | Ivabradine-d3 CAS No. 155974-00-8 (non-d) C27H33N2O5D3 M.W. 471.62 I-301
 |
| Ivabradine HCl CAS No. 148849-67-6 C27H36N2O5.HCl M.W. 468.60 36.46 I-302
 | | | Ivabradine-d3 Hydrochloride CAS No. 1217809-61-4 C27H33N2O5D3.HCl M.W. 508.08 I-304
 |
| N-Desmethyl Ivabradine Hydrochloride CAS No. 1246638-08-3 C26H34N2O5. HCl M.W. 491.03 I-305
 | | | N-Desmethyl Ivabradine-d6 Hydrochloride C26H28N2O5D6.HCl M.W. 497.07 I-306
 |
| Ivabradine-d6 C27H30N2O5D6 M.W. 474.63 I-307
 | | | O-Desmethyl Ivabradine C26H34N2O5 M.W. 454.57 I-308
 |
| Dehydro Ivabradine (Ivabradine IVA-3 Impurity) CAS No. 1086026-31-4 C27H34N2O5 M.W. 466.58 I-309
 | | | Dehydro Ivabradine Oxalate C27H34N2O5. C2H2O4 M.W. 466.58 90.04 I-310
 |
| Ibudilast CAS No. 50847-11-5 C14H18N2O M.W. 230.31 I-311
 | | | Ibudilast-d7 C14H11N2OD7 M.W. 237.35 I-312
 |
| Ibutilide CAS No. 122647-32-9 C20H36N2O3S M.W. 384.59 I-321
 | | | Ibutilide-d5 C20H31N2O3SD5 M.W. 389.62 I-322
 |
| Ibutilide Related Compound A CAS No. 100632-58-4 C20H32N2O4S M.W. 396.55 I-323
 | | | Ibutilide Related Compound B CAS No. 160087-98-9 C20H34N2O4S M.W. 398.57 I-324
 |
| Iacvita-d10 C28H42N2O6D10 M.W. 522.80 I-332
 | | | Imiquimod Related Compound A CAS No. 99010-24-9 C14H15N3 M.W. 225.30 I-341
 |
| Imiquimod Related Compound B CAS No. 99010-63-6 C14H15N3O M.W. 241.30 I-342
 | | | Imiquimod Related Compound C CAS No. 99010-64-7 C14H14ClN3 M.W. 259.74 I-343
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| Imiquimod Related Compound D CAS No. 853792-81-1 C13H14N4 M.W. 226.28 I-344
 | | | Imiquimod Related Compound E CAS No. 99010-09-0 C13H17N3 M.W. 215.30 I-345
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| Imiquimod-d7 C14H9N4D7 M.W. 247.35 I-346
 | | | Imiquimod CAS No. 99011-02-6 C14H16N4 M.W. 240.31 I-347
 |
| Ibogaine CAS No. 83-74-9 C20H26N2O M.W. 310.44 I-351
 | | | Ibogaine-d3 CAS No. NA C20H23N2OD3 M.W. 313.46 I-352
 |
| Noribogaine-d3 CAS No. NA C19H21N2OD3 M.W. 299.43 I-353
 | | | Noribogaine-d4 HCl C19H20N2OD4.HCl M.W. 300.44 36.46 I-354
 |
| Noribogaine Glucuronide Lithium Salt CAS No. N/A C25H31N2O7. Li M.W. 471.54 6.94 I-356
 | | | Imipenem-d4 CAS No. N/A C12H13N3O4SD4 M.W. 303.38 I-361
 |
| Imipenem Impurity A CAS No. 59995-64-1 C11H16N2O4S M.W. 272.33 I-362
 | | | Iohexol CAS No. 66108-95-0 C19H26I3N3O9 M.W. 821.15 I-371
 |
| Iohexol Related Compound A CAS No. 31127-80-7 C16H20I3N3O7 M.W. 747.07 I-372
 | | | Iohexol Related Compound C CAS No. 76820-34-3 C14H19N3O8 M.W. 357.32 I-373
 |
| Ioxitalamic Acid CAS No. 28179-44-4 C12H11I3N2O5 M.W. 643.95 I-381
 | | | Ioxitalamic Acid-d4 CAS No. N/A C12H7I3N2O5D4 M.W. 647.97 I-382
 |
| Inosine-15N4 C10H12N4O5 M.W. 272.20 I-401
 | | | Iopamidol-d3 C17H19I3N3O8D3 M.W. 780.11 I-412
 |
| Iproniazid C9H13N3O M.W. 179.22 I-421
 | | | Iproniazid-d6 C9H7N3OD6 M.W. 185.26 I-422
 |
| Iproniazid-1-oxide C9H13N3O2 M.W. 195.22 I-423
 | | | Acetylisoniazid C8H9N3O2 M.W. 179.18 I-424
 |
| Iclaprim C19H22N4O3 M.W. 354.41 I-431
 | | | Indinavir C36H47N5O4 M.W. 613.81 I-441
 |
| Indinavir-d6 C36H41N5O4D6 M.W. 619.84 I-442
 | | | Isoprenaline Hydrochloride CAS No. 51-30-9 C11H17NO3 HCl M.W. 211.26 36.46 I-451
 |
| Isoprenaline Impurity A Hydrochloride CAS No. N/A C11H15NO3 HCl M.W. 209.25 36.46 I-452
 | | | Imidafenacin CAS No. 170105-16-5 C20H21N3O M.W. 319.41 I-461
 |
| Imidafenacin Related Compound 1 (4-(1H-Imidzol-1-yl)-2,2-Diphenylbutanamide) CAS No. 170105-20-1 C19H19N3O M.W. 305,38 I-462
 | | | Imidafenacin Related Compound 2 (N-(3-Carbamoyl-3,3-Diphenylpropyl)-Oxamide) CAS No. 503598-17-2 C18H19N3O3 M.W. 325.37 I-463
 |
| Imidafenacin Related Compound 4 (4-(2-Methyl-1H-Imidazol-1-yl)-2,2-Diphenylbutanoic Acid) CAS No. 174266-18-3 C20H20N2O2 M.W. 320.39 I-464
 | | | N-(3-Carbamoyl-3,3-Diphenylpropyl)-Oxamic Acid CAS No. N/A C18H18N2O4 M.W. 326.36 I-465
 |
| 4-(2-Methyl-4,5-Dioxoimidazolidin-1-yl)-2,2-Diphenylbutanamide CAS No. N/A C20H19N3O3 M.W. 349.39 I-466
 | | | 1-(3-Cyano-3,3-Diphenylpropyl)-2-Methyl-1H-Imidazolium Phosphate CAS No. N/A C20H19N3 H3O4P M.W. 301.39 98.00 I-467
 |
| Imidafenacin Related Compound 6 (4-Acetimidoylamino-2,2-Diphenylbutanamide) CAS No. 503598-33-2 C18H21N3O M.W. 295.39 I-468
 | | | Imidafenacin Related Compound 5 C20H21N3O3 M.W. 351.41 I-469
 |
| Sodium Iothalamate CAS No. 1225-20-3 C11H8I3N2O4 Na M.W. 612.91 22.99 I-471
 | | | Sodium Iothalamate-d6 CAS No. N/A C11H2I3N2O4D6 Na M.W. 618.95 22.99 I-472
 |
| Sodium Iothalamate-d3 CAS No. N/A C11H5I3N2O4D3 Na M.W. 615.93 22.99 I-473
 | | | 1,2,3,4-Tetrahydro-4,8-Dihydroxy-2-Methyl-Isoquinoline CAS No. 23824-25-1 C10H13NO2 M.W. 179.22 I-481
 |
| 1,2,3,4-Tetrahydro-4,6-Dihydroxy-2-Methyl-Isoquinoline CAS No. 23824-24-0 C10H13NO2 M.W. 179.22 I-482
 | | | 5-Chloro-2-methyl-4-Isothiazolin-3-one CAS No. 26172-55-4 C4H4ClNOS M.W. 149.60 I-491
 |
| Iguratimod CAS No. 123663-49-0 C17H14N2O6S M.W. 374.37 I-501
 | |