Molekula
5,5'-Dithio-bis(2-nitrobenzoïque acid)
5,5'-Dithio-bis(2-nitrobenzoic acid)
5,5'-Dithio-bis(2-nitrobenzoic acid), also known as DTNB or Ellman's reagent, is a chemical used to quantify free thiol groups in biological samples. It reacts specifically with sulfhydryl groups to produce a yellow-colored anion detectable at 412 nm. CAS: 69-78-3, Molecular Formula: C14H8N2O8S2, Molecular Weight: 396.35 g/mol, Storage: 2 to 8 °C, Signal Word: Warning. Molekula supplies 5,5'-Dithio-bis(2-nitrobenzoic acid) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Aperçu
5,5'-Dithio-bis(2-nitrobenzoic acid), also known as DTNB or Ellman's reagent, is a chemical used to quantify free thiol groups in biological samples. It reacts specifically with sulfhydryl groups to produce a yellow-colored anion detectable at 412 nm. CAS: 69-78-3, Molecular Formula: C14H8N2O8S2, Molecular Weight: 396.35 g/mol, Storage: 2 to 8 °C, Signal Word: Warning. Molekula supplies 5,5'-Dithio-bis(2-nitrobenzoic acid) from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Prix et formats de conditionnement
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5 g — £42.00 par emballage
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25 g — £155.60 par emballage
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500 g — £1,290.00 par emballage
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1 kg — £2,180.00 par emballage
Les prix ne comprennent pas la TVA, les taxes sur les ventes ni les frais d'expédition. Des emballages en grande quantité et sur mesure sont disponibles sur demande.
Spécifications
| Property | Value |
|---|---|
| Appearance | Straw yellow powder |
| Water | ≤0.5% |
| Purity (HPLC) | ⩾ 99.0% |
| Identification | Conforms to reference |
| Solubility | soluble (1% in Methanol) - light yellow solution |
| Nitrogen Content | 16.7 - 17.6% |
| Assay (Titration) | 98.0 - 101.0% |
| For research use only, not for human use | For research use only, not for human use |
Stockage et manipulation
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Shelf Life | 24 months |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 27025260 |
| CAS Number | 69-78-3 |
| Molecular Formula | (-SC6H3(NO2)COOH)2 |
| Molecular Weight | 396.35 |
| SMILES | C1=CC(=C(C=C1SSC2=CC(=C(C=C2)[N+](=O)[O-])C(=O)O)C(=O)O)[N+](=O)[O-] |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29309029 |
| Tariff Code | 2930909599 |
Sécurité et GHS
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Health Hazard
GHS07
Déclarations de danger
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Déclarations de précaution
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+352 IF ON SKIN: Wash with soap and water
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
À usage recherche et industriel uniquement
Documents
Fiches de données de sécurité (FDS)
Disponible en IT, FR, ES, DE, EN.
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IT - (27025260) 5,5'-DITHIO-BIS(2-NITROBENZOIC ACID) [69-78-3].pdf
SDS · IT · 285 KB
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FR - (27025260) 5,5'-DITHIO-BIS(2-NITROBENZOIC ACID) [69-78-3].pdf
SDS · FR · 289 KB
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ES - (27025260) 5,5'-DITHIO-BIS(2-NITROBENZOIC ACID) [69-78-3].pdf
SDS · ES · 286 KB
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DE - (27025260) 5,5'-DITHIO-BIS(2-NITROBENZOIC ACID) [69-78-3].pdf
SDS · DE · 286 KB
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EN - (27025260) 5,5'-DITHIO-BIS(2-NITROBENZOIC ACID) [69-78-3].pdf
SDS · EN · 283 KB
Certificat d'analyse (CoA) par lot
Saisissez un numéro de lot ou de série pour récupérer le certificat d'analyse correspondant à ce lot spécifique. Nous pouvons en générer un à partir des données de spécification si aucun PDF n'est disponible.
Synonymes
Aucun autre nom enregistré pour ce produit.
Questions fréquentes
What is 5,5'-Dithio-bis(2-nitrobenzoic acid) used for?
It is primarily used in biochemical assays to measure free thiol groups, particularly in the determination of glutathione levels.
What is the chemical formula and molecular weight?
The formula is C14H8N2O8S2 and the molecular weight is 396.35 g/mol.
How should this compound be stored?
Store at 2 to 8 °C in a cool, dark place to prevent degradation.
What grade is available?
Available in analytical grade for laboratory use.
Can Molekula supply this in bulk?
Yes, Molekula can supply larger quantities upon request; please contact our sales team for bulk pricing and availability.
What documentation comes with the order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) with the shipment.
Prêt à passer commande ou besoin d'un emballage sur mesure ?
Indiquez le produit, le grade et la quantité – Molekula répond généralement sous un jour ouvrable avec le prix et le délai de livraison.