Active ingredientGentian VioletCat. No. P-G028-001CAS 548-62-9
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Impurity or related compound · Gentian Violet family
Pharmaceutical analytical standardN,N,N',N'-Tetramethylpararosaniline
Synonyms: Gentian Violet Impurity 3, Benzenamine, 4-((4-(dimethylamino)phenyl)(4-imino-2,5-cyclohexadien-1-ylidene)methyl)-N,N-dimethyl-, N,N,N',N'-Tetramethyl-p-rosaniline
- Cat. No.
- P-G028-006
- CAS
- 133502-50-8
- Alternative CAS
- 84215-49-6 (hydrochloride)
- Formula
- C23H25N3
- Molecular weight
- 343.47 g/mol
- Category
- Impurity or related compound
Family: Gentian Violet
A violet dye of the triarylmethane family, also called crystal violet: first synthesised in 1883, it is used as a histological stain and in the Gram staining of bacteria, and was once an important topical antiseptic and antifungal.
Did you know?The name refers to its colour, like the petals of certain gentian flowers: it is not made from gentians or violets. In 1884 Hans Christian Gram used it to stain bacteria.
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 Gentian Violet family
Active ingredientGentian VioletCat. No. P-G028-001CAS 548-62-9
Isotopically labelledGentian Violet-d6Cat. No. P-G028-002CAS 1266676-01-0
Isotopically labelledLeuco Gentian Violet-d6Cat. No. P-G028-003CAS 1173023-92-1
ImpurityGentian Violet Impurity 1Cat. No. P-G028-004CAS 633-02-3
ImpurityLeuco Gentian VioletCat. No. P-G028-005CAS 603-48-5Frequently 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.