Butyphthalide impurities and related standards
46 reference standards related to Butyphthalide held in the RSSE catalogue — pharmacopoeial impurities, non-compendial impurities, metabolites and labelled analogues where available.
CAS numbers are listed for 46 of 46; 43 entries carry a structure drawing.
| Compound | CAS No. | Catalogue No. | Formula | MW |
|---|---|---|---|---|
| Butyphthalide impurity 33 | 109-52-4 | RS-B008002 | C5H10O2 | 102.13 |
| Butyphthalide Impurity 68 | 1225206-60-9 | RS-B008004 | C8H5BrO3 | 229.03 |
| Butyphthalide impurity15 | 131-70-4 | RS-B008008 | C12H14O4 | 222.24 |
| Butyphthalide impurity 41 | 1379166-79-6 | RS-B008009 | C9H10O3 | 166.17 |
| Butyphthalide impurity17 | 14570-43-5 | RS-B008010 | C12H12O2 | 188.22 |
| Butyphthalide impurity16 | 152567-80-1 | RS-B008011 | C12H14O3 | 206.24 |
| Butyphthalide Impurity 57 | 162050-42-2 | RS-B008012 | C12H14O3 | 206.24 |
| Butyphthalide impurity 19 | 16692-58-3 | RS-B008013 | C12H14O2 | 190.24 |
| Butyphthalide Impurity 60 | 172687-90-0 | RS-B008014 | C16H22O2 | 246.34 |
| Butyphthalide impurity14 | 17369-59-4 | RS-B008015 | C11H10O | 174.2 |
| Butyphthalide impurity8 | 17475-41-1 | RS-B008016 | C10H10O2 | 162.19 |
| Butyphthalide impurity 38 | 1841089-56-2 | RS-B008017 | C24H30O5 | 398.49 |
| Butyphthalide impurity 39 | 1841089-57-3 | RS-B008018 | C24H28O4 | 380.48 |
| Butyphthalide impurity5 | 19666-03-6 | RS-B008019 | C11H12O3 | 192.21 |
| Butyphthalide impurity18 | 199736-94-2 | RS-B008020 | C12H14O2 | 190.24 |
| Butyphthalide impurity 36 | 2245275-82-3 | RS-B008021 | C15H18O5 | 278.3 |
| Butyphthalide impurity7 | 2360-45-4 | RS-B008022 | C10H10O3 | 178.18 |
| Butyphthalide impurity4 | 3453-63-2 | RS-B008023 | C9H6O2 | 146.14 |
| Butyphthalide impurity10 | 3453-64-3 | RS-B008024 | C9H8O2 | 148.16 |
| Butyphthalide impurity 22 | 380905-48-6 | RS-B008025 | C12H16O3 | 208.25 |
| Butyphthalide Impurity 61 | 40125-50-6 | RS-B008026 | C8H4Br2O2 | 291.92 |
| Butyphthalide Impurity 63 | 503822-00-2 | RS-B008027 | C8H5BrO3 | 229.03 |
| Butyphthalide impurity 24 | 539-82-2 | RS-B008028 | C7H14O2 | 130.18 |
| Butyphthalide impurity 21 | 550-37-8 | RS-B008029 | C12H14O3 | 206.24 |
| Butyphthalide impurity 20 | 551-08-6 | RS-B008030 | C12H12O2 | 188.22 |
| Butyphthalide impurity 53 | 5625-41-2 | RS-B008031 | C6H10N2O4 | 174.15 |
| Butyphthalide impurity11 | 577-56-0 | RS-B008032 | C9H8O3 | 164.16 |
| Butyphthalide Impurity 9 | 61658-90-0 | RS-B008033 | C10H8O2 | 160.17 |
| Butyphthalide impurity 40 | 623-93-8 | RS-B008034 | C9H20O | 144.25 |
| Butyphthalide Impurity 50 | 65543-72-8 | RS-B008035 | C16H10O5 | 282.25 |
| Butyphthalide impurity12 | 691863-84-0 | RS-B008036 | C13H17NO | 203.28 |
| Butyphthalide impurity6 | 857538-11-5 | RS-B008037 | C13H16O3 | 220.26 |
| Butyphthalide impurity 23 | 88-99-3 | RS-B008038 | C8H6O4 | 166.13 |
| Butyphthalide Impurity 69 | 90965-68-7 | RS-B008039 | C13H14O2 | 202.25 |
| Butyphthalide Impurity 64 | 950681-33-1 | RS-B008041 | C12H13BrO2 | 269.13 |
| Butyphthalide Impurity 65 | 950681-35-3 | RS-B008042 | C12H13BrO2 | 269.13 |
| Butyphthalide Impurity 66 | 950681-46-6 | RS-B008043 | C12H13BrO2 | 269.13 |
| Butyphthalide Impurity 67 | 950681-49-9 | RS-B008044 | C12H13BrO2 | 269.13 |
| Butyphthalide impurity 43 | 952412-99-6 | RS-B008046 | C11H14O3 | 194.23 |
| Butyphthalide impurity 91 | 114259-19-7 | RS-B008003 | C12H12O2 | 188.22 |
| Butyphthalide impurity 87 | 122654-49-3 | RS-B008005 | C13H17NO | 203.28 |
| Butyphthalide impurity 74 | 122654-56-2 | RS-B008006 | C12H15NO | 189.25 |
| Butyphthalide impurity 72 | 129780-59-2 | RS-B008007 | C12H14O2 | 190.24 |
| Butyphthalide Impurity 62 | 102126-71-6 | RS-B008001 | C8H5BrO3 | 229.03 |
| Butyphthalide impurity13 | 94704-90-2 | RS-B008040 | C13H14O2 | 202.25 |
| Butyphthalide impurity 42 | 952412-79-2 | RS-B008045 | C10H12O3 | 180.2 |
Structures
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Butyphthalide impurity 33
COA per lot -
Butyphthalide Impurity 68
COA per lot -
Butyphthalide impurity15
COA per lot -
Butyphthalide impurity 41
COA per lot -
Butyphthalide impurity17
COA per lot -
Butyphthalide impurity16
COA per lot -
Butyphthalide Impurity 57
COA per lot -
Butyphthalide impurity 19
COA per lot
Frequently asked
How many Butyphthalide-related reference standards do you hold?
46 standards are listed on this page as of the latest catalogue build. CAS numbers are published for 46 of them and 43 entries carry a structure drawing. The catalogue is extended as new lots are released.
Can you supply a Butyphthalide 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 Butyphthalide 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 Butyphthalide 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].