Active ingredient · Thiomersal family
Pharmaceutical analytical standardThiomersal Sodium Salt
Synonyms: Thimerosal, sodium (2-carboxylatophenyl)sulfanyl-ethylmercury, Thiomersalum, Mercurothiolate, Merthiolate, Thimerosalate, Thimerosalum, Thimerosol, Thimersalate, Merfamin, Mertorgan, Merzonin, Tiomersal, Tiomersale, Estivin, Merphol, Mercurothiolatum, Vitaseptol Loesung, Ethylmerkurithiosalicilan sodny, NSC 4794, Thiomerosal, Sodio etilmercuriotiosalicilato, Ethyl((2-((sodiooxy)carbonyl)phenyl)sulfanyl)mercury, Elicide, Nosemack, Vitaseptol, Merseptyl, Caswell No. 766, EPA Pesticide Chemical Code 078901, Thimerosal (JAN/USP), Thimerosal, meets USP testing specifications, ETHYLMERCURITHIOSALICYLIC ACID NA Thimerosal
- Cat. No.
- P-T093-001
- CAS
- 54-64-8
- Alternative CAS
- 148-61-8 (free acid)
- 736071-66-2 (free acid)
- Formula
- C9H9HgNaO2S
- Molecular weight
- 404.81 g/mol
- Category
- Active ingredient (API)
An organomercury compound with antiseptic and antifungal action, synthesised by the chemist Morris Kharasch and patented in the late 1920s; it is used as a preservative in eye and nasal products, skin test antigens and immunoglobulin preparations.
Did you know?Kharasch is also famous for the peroxide effect: in 1933, with Frank Mayo, he showed that peroxides change the way hydrogen bromide adds to alkenes, proposing a free-radical mechanism.
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
Shipped under controlled temperature when the molecule requires it.
For every lot: identity, purity and assay, with the supporting spectra and chromatograms.
Sent with every order.
Follow your shipment live, from our warehouse to your lab.
Pharmacopoeial standards available
The official European Pharmacopoeia standards for this molecule, supplied with EDQM documentation.
- Thiomersal CRSEP Y0000109
Frequently 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.