Aprepitant impurities and related standards
39 reference standards related to Aprepitant held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.
CAS numbers are listed for 39 of 39; 38 entries carry a structure drawing.
| Compound | CAS No. | Catalogue No. | Formula | MW |
|---|---|---|---|---|
| Aprepitant Impurity 24 | 1148113-53-4 | RS-A075001 | C23H21F7N4O3 | 534.43 |
| Aprepitant Impurity 23 | 1185502-97-9 | RS-A075002 | C23H21F7N4O3 | 534.43 |
| Aprepitant Impurity 7 | 1185503-48-3 | RS-A075004 | C20H18F7NO2 | 437.35 |
| Aprepitant Impurity 31 | 1242175-34-3 | RS-A075005 | C23H21F7N4O3 | 534.43 |
| Aprepitant Impurity 5 | 1242175-36-5 | RS-A075006 | C20H18F7NO2 | 437.35 |
| Aprepitant Impurity 6 | 1242175-38-7 | RS-A075007 | C20H18F7NO2 | 437.35 |
| Aprepitant Impurity 2 | 1242175-40-1 | RS-A075008 | C23H21F7N4O3 | 534.43 |
| Aprepitant Impurity 1 | 170729-76-7 | RS-A075013 | C23H22F6N4O3 | 516.44 |
| Aprepitant Impurity 4 | 170729-79-0 | RS-A075014 | C20H18F7NO2 | 437.35 |
| Aprepitant Impurity 9 | 170902-80-4 | RS-A075015 | C20H18F7NO2 | 437.35 |
| Aprepitant Impurity 21 | 170902-81-5 | RS-A075016 | C23H21F7N4O3 | 534.43 |
| Aprepitant Impurity 36 | 171338-33-3 | RS-A075017 | C20H19F6NO2 | 419.36 |
| Aprepitant Impurity 28 | 172673-23-3 | RS-A075019 | C23H21F7N4O4 | 550.43 |
| Aprepitant Impurity 44 | 172676-88-9 | RS-A075020 | C23H21F7N4O3 | 534.43 |
| Aprepitant Impurity 22 | 172822-28-5 | RS-A075021 | C23H21F7N4O3 | 534.43 |
| AprepitantImpurity20 | 172822-29-6 | RS-A075022 | C23H21F7N4O3 | 534.43 |
| Aprepitant EP Impurity B | 2348441-62-1 | RS-A075025 | C29H25F7N4O3 | 610.52 |
| Aprepitant EP Impurity C | 2348441-63-2 | RS-A075026 | C29H25F7N4O3 | 610.52 |
| Aprepitant Impurity 41 | 2377328-01-1 | RS-A075027 | C27H24F7NO2 | 527.47 |
| Aprepitant Impurity 26 | 252742-72-6 | RS-A075029 | C3H4ClN3O | 133.54 |
| Aprepitant Impurity 40 | 287930-73-8 | RS-A075030 | C11H13NO3 | 207.23 |
| Aprepitant Impurity 39 | 287930-75-0 | RS-A075031 | C21H19F6NO3 | 447.37 |
| Aprepitant Impurity 16 | 327623-34-7 | RS-A075032 | C21H19F6NO3 | 447.37 |
| Aprepitant Impurity 15 | 327623-35-8 | RS-A075033 | C21H19F6NO3 | 447.37 |
| Aprepitant Impurity 17 | 327623-37-0 | RS-A075034 | C20H18F7NO2 | 437.35 |
| Aprepitant Impurity 8 | 380499-06-9 | RS-A075035 | C20H18F7NO2 | 437.35 |
| Aprepitant Impurity 18 | 380499-07-0 | RS-A075036 | C20H16F7NO2 | 435.34 |
| Aprepitant Impurity 33 | 502537-39-5 | RS-A075037 | C20H20F7NO3 | 455.37 |
| Aprepitant Impurity 29 | 638990-20-2 | RS-A075038 | C22H24N2O5 | 396.44 |
| Aprepitant Impurity 56 | 1185503-03-0 | RS-A075003 | C17H18FNO2 | 287.33 |
| Aprepitant Impurity 11(Hydrochloride) | 1333995-14-4 | RS-A075009 | C20H18F7NO2.HCl | 437.35 |
| Aprepitant Impurity 10(Hydrochloride) | 1333998-21-2 | RS-A075010 | C20H18F7NO2.HCl | 437.35 |
| Aprepitant Impurity 13(Hydrochloride) | 1333998-27-8 | RS-A075011 | C20H18F7NO2.HCl | 437.35 |
| Aprepitant Impurity 12(Hydrochloride) | 1447693-83-5 | RS-A075012 | C20H18F7NO2.HCl | 437.35 |
| Aprepitant Impurity 48 | 171482-05-6 | RS-A075018 | C20H18F7NO2.HCl | 437.35 |
| Aprepitant Impurity B Enantiomer HCl | 183901-47-5 | RS-A075023 | C27H24F7NO2.HCl | 527.49 |
| Aprepitant Impurity 9 | 219821-37-1 | RS-A075024 | C24H25F7N4O4 | 566.48 |
| Aprepitant Impurity 7 HCl | 874460-46-5 | RS-A075039 | C20H19F6NO2.HCl | 419.37 |
| Aprepitant Impurity 41 | 2410426-96-7 | RS-A075028 | C14H13F6NO3 | 357.25 |
Structures
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Aprepitant Impurity 24
COA per lot -
Aprepitant Impurity 23
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Aprepitant Impurity 7
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Aprepitant Impurity 31
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Aprepitant Impurity 5
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Aprepitant Impurity 6
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Aprepitant Impurity 2
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Aprepitant Impurity 1
COA per lot
Frequently asked
How many Aprepitant-related reference standards do you hold?
39 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 39 of them and 38 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply an Aprepitant impurity that is not listed here?
Yes. Non-compendial impurities can be quoted from a structure — a CAS number is not required. Send the structure, a SMILES string or the parent drug substance with your enquiry and we will come back with availability.
What documentation is supplied with Aprepitant impurities?
Every lot ships with its own certificate of analysis. The certificate records the catalogue number, the batch number, the tests performed, the specification applied and the result obtained for that lot. A safety data sheet is supplied with the shipment.
Do you publish prices or a lead time for Aprepitant impurities?
No price list is published: quotations are prepared per enquiry, because availability and packing depend on the lot and the quantity you need. Send the catalogue number and the quantity and a technical contact will answer with availability and a quotation.
Cannot find the impurity you need? Non-compendial impurities can be quoted from a structure — a CAS number is not required. Write to [email protected].