Active ingredientTetracaineCat. No. P-T072-001CAS 94-24-6
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Pharmacopoeial impurity · Tetracaine family
Pharmaceutical analytical standardTetracaine EP Impurity C
Synonyms: Methyl 4-(Butylamino)benzoate, Benzoic acid, 4-(butylamino)-, methyl ester, N-Butyl-4-(methoxycarbonyl)aniline, Benzonatate (1056005), Tetracaine Impurity 3(Tetracaine EP Impurity C)
- Cat. No.
- P-T072-004
- CAS
- 71839-12-8
- Alternative CAS
- N/A
- Formula
- C12H17NO2
- Molecular weight
- 207.27 g/mol
- Category
- Pharmacopoeial impurity (EP/USP)
Family: Tetracaine
An ester-type local anaesthetic, also known as amethocaine, synthesised in Germany in 1928 and used from the early 1930s for spinal anaesthesia; it is also used as a fast-acting topical anaesthetic.
Did you know?Its creator, German chemist Otto Eisleb, also made pethidine (meperidine) in the late 1930s, considered the first fully synthetic opioid.
The two levels compared
| Level 1 Mass balance | Level 2 Mass balance + qNMR | |
|---|---|---|
| Identity (IR, MS, 1H and 13C-NMR; peptides: ESI-MS, MALDI-TOF and IR) | ✓ | ✓ |
| HPLC purity (min. 95%) | ✓ | ✓ |
| Content by mass balance (min. 90%; peptides: for information only)* | ✓ | ✓ |
| Content verified by qNMR (small molecules only) | · | ✓ |
| Suitable to qualify it as an in-house primary standard (ICH Q7) | · | ✓ |
* Mass balance is performed on every molecule. The only exceptions are cases where the chemistry of the molecule prevents it, for example oils and highly volatile substances, on which some of the required measurements cannot be made: in those cases the CoA states how the content was assigned.
What you receive
The analytical standard
Shipped under controlled temperature when the molecule requires it.
Certificate of analysis (CoA)
For every lot: identity, purity and assay, with the supporting spectra and chromatograms.
Safety data sheet (SDS)
Sent with every order.
Tracked shipment
Follow your shipment live, from our warehouse to your lab.
More products in the Tetracaine family
Active ingredientTetracaineCat. No. P-T072-001CAS 94-24-6
Active ingredientTetracaine HClCat. No. P-T072-002CAS 136-47-0
Pharmacopoeial impurityTetracaine EP Impurity BCat. No. P-T072-003CAS 4740-24-3
Isotopically labelledN-Nitroso-Tetracaine EP Impurity A-d4Cat. No. P-T072-005
Isotopically labelledTetracaine-d6Cat. No. P-T072-006CAS 756771-02-5
Isotopically labelledTetracaine-d6 HClCat. No. P-T072-007CAS 80404-52-0
NitrosamineN-Nitroso Desmethyl TetracaineCat. No. P-T072-008CAS 3050754-69-0
NitrosamineN-Nitroso TetracaineCat. No. P-T072-009CAS 3038740-94-9Frequently asked questions
Is mass balance always performed?
Yes, on every molecule. The only exceptions are cases where the chemistry of the molecule prevents it: for example oils and highly volatile substances, on which some measurements (such as thermogravimetry) cannot be made. In those cases the CoA states which method was used to assign the content.
Can I ask for a different quantity?
Yes. The quantities are only suggestions: choose "Other" and enter the milligrams or grams you need.
Which level should I choose?
Level 1 is enough for most routine testing. Level 2 adds an independent qNMR content value and is meant for labs that need to qualify an in-house primary standard. For peptides and similar molecules, Level 2 is not available.
When will I get the quote?
Within 24 working hours, with price, availability and delivery time.
Need a molecule you cannot find?
Custom synthesis of impurities, metabolites and labelled compounds, with the same characterisation level.