1H-indole-5,6-diol
C8H7NO2
Consulting for 1H-indole-5,6-diol
Our experts support you with application, dosage, and compliance.
Identification
- CAS Number
- 3131-52-0
- EC Number
- 412-130-9
- UN Number
- 3077
- Index Number
- 604-063-00-0
- PubChem CID
- 114683
Physical-chemical properties
- Molecular Formula
- C8H7NO2
- Molar Mass
- 149.15 g/mol
- IUPAC Name
- 1H-indole-5,6-diol
Chemical Identifiers
- InChI
- InChI=1S/C8H7NO2/c10-7-3-5-1-2-9-6(5)4-8(7)11/h1-4,9-11H
- InChI Key
- SGNZYJXNUURYCH-UHFFFAOYSA-N
Overview
1H-indole-5,6-diol (CAS 3131-52-0) is an indole derivative compound with dihydroxy functional groups at positions 5 and 6 of the benzene ring. This specialized organic compound belongs to the indole family, characterized by its bicyclic structure consisting of a benzene ring fused to a pyrrole ring. The presence of two hydroxyl groups in adjacent positions (5,6-diol) gives this molecule unique chemical properties and reactivity patterns that distinguish it from other indole derivatives. With a molecular formula of C8H7NO2 and molecular weight of 149.15 g/mol, 1H-indole-5,6-diol exhibits specific solubility and stability characteristics that make it valuable for various industrial applications. The compound requires careful handling due to its classification under multiple hazard categories. It presents acute toxicity concerns (Acute Tox. 4), can cause serious eye damage (Eye Dam. 1), and has chronic aquatic toxicity potential (Aquatic Chronic 2). These safety considerations necessitate appropriate personal protective equipment and environmental controls during processing and storage. The substance falls under ADR Class 9 for transportation purposes. In industrial applications, 1H-indole-5,6-diol serves primarily as a chemical intermediate in pharmaceutical synthesis and organic chemistry research. Its dihydroxy functionality makes it particularly useful in oxidation reactions and as a building block for more complex molecular structures. The compound also finds application in the development of specialty chemicals and advanced materials research, where its unique electronic properties contribute to desired product characteristics. While structurally different from compounds like 2-fluoro-4-hydroxybenzonitrile, both molecules share similar applications as pharmaceutical intermediates in synthetic chemistry pathways. OYSI provides reliable access to 1H-indole-5,6-diol for European industrial customers, ensuring consistent quality and regulatory compliance for technical applications.
Safety & Classification
Acute Tox. 4 *; Eye Dam. 1; Aquatic Chronic 2
GHS Pictograms
HHazard Statements (H-Statements)
Describe the nature and severity of the hazard
Classification according to CLP Regulation (EC) No 1272/2008. The complete list of hazard and precautionary statements can be found in the Safety Data Sheet (SDS).
First Aid Measures
Eye Contact
Measures if substance gets into the eyes
First Aid Actions
- +P305IF IN EYES:
- +P351Rinse cautiously with water for several minutes.
- +P338Remove contact lenses, if present and easy to do. Continue rinsing.
- +P313Get medical advice/attention.
Related hazard statements:
Ingestion
Measures if substance is accidentally swallowed
First Aid Actions
- +P301IF SWALLOWED:
- +P330Rinse mouth.
- +P331Do NOT induce vomiting.
- +P310Immediately call a POISON CENTER/doctor.
Related hazard statements:
General Measures
Emergency 112 | Poison Control: +49 30 19240 (DE), +33 1 45 42 59 59 (FR), +31 30 274 88 88 (NL)
First aid measures are based on CLP classification and associated P-statements. They do not replace the Safety Data Sheet (SDS). In case of emergency, always consult the full SDS and a physician.
Transport (ADR)
| UN Number | 3077 |
| ADR Class | 9 |
| Packing Group | III |
| Tunnel Code | - |
| Proper Shipping Name | 5,6-Dihydroxyindol |
| Marine Pollutant | No |
Frequently Asked Questions
What is 1H-indole-5,6-diol?
1H-indole-5,6-diol is an organic chemical compound with the molecular formula C8H7NO2 and CAS number 3131-52-0. This indole derivative features two hydroxyl groups positioned at the 5 and 6 positions of the indole ring structure. With a molecular weight of 149.15 g/mol, it belongs to the class of substituted indoles and is classified as a hazardous substance requiring proper handling precautions due to its toxicity and corrosive properties.
What are the physicochemical properties of 1H-indole-5,6-diol?
1H-indole-5,6-diol is a solid organic compound at room temperature with the molecular formula C8H7NO2 and a molecular weight of 149.15 g/mol. As an indole derivative with hydroxyl substituents, it typically appears as a crystalline powder. The presence of hydroxyl groups and the nitrogen-containing heterocycle suggests moderate polarity and potential solubility in polar solvents. Specific physical properties such as melting point, color, and exact solubility data should be confirmed through technical documentation.
What is 1H-indole-5,6-diol used for?
1H-indole-5,6-diol serves primarily as an intermediate in pharmaceutical and chemical synthesis applications. This compound is utilized in the production of various bioactive molecules and pharmaceutical intermediates due to its indole structure, which is a common motif in many drugs and natural products. It may also be employed in research applications for the synthesis of more complex indole derivatives and in studies related to neurotransmitter analogs and other biologically active compounds.
How to handle 1H-indole-5,6-diol safely?
1H-indole-5,6-diol must be handled with appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing due to its Acute Tox. 4 and Eye Dam. 1 classifications. Work should be conducted in well-ventilated areas or under fume hoods to prevent inhalation exposure. Avoid direct skin and eye contact, as the substance can cause severe eye damage. All handling procedures should follow established chemical safety protocols and workplace safety guidelines.
How to store 1H-indole-5,6-diol correctly?
1H-indole-5,6-diol should be stored in tightly sealed containers in a cool, dry, well-ventilated area away from heat sources and incompatible materials. Due to its hazard classification, storage areas must be clearly labeled and access restricted to authorized personnel only. The storage location should be equipped with appropriate spill containment measures and emergency equipment. Regular inventory checks and container integrity inspections are recommended to ensure safe storage conditions and prevent environmental release.
What to do in case of contact with 1H-indole-5,6-diol?
Immediate action is required if contact occurs with 1H-indole-5,6-diol. For eye contact, flush immediately with plenty of clean water for at least 15 minutes and seek immediate medical attention due to the Eye Dam. 1 classification. For skin contact, remove contaminated clothing and wash affected area thoroughly with soap and water. If ingested, do not induce vomiting and seek medical attention immediately. In all cases of exposure, contact emergency medical services and provide the safety data sheet to medical personnel.
How to dispose of 1H-indole-5,6-diol properly?
1H-indole-5,6-diol must be disposed of as hazardous chemical waste in accordance with local, national, and EU waste regulations. The substance cannot be disposed of through normal waste streams due to its toxicity and environmental hazard classification (Aquatic Chronic 2). Disposal should be arranged through licensed hazardous waste management companies. Containers must be properly labeled, and waste manifests should accurately describe the material. Empty containers may also require special disposal procedures due to residual contamination.
How to transport 1H-indole-5,6-diol?
1H-indole-5,6-diol is classified as ADR Class 9 (Miscellaneous dangerous goods), Packing Group III for transportation purposes. This classification requires specific packaging, labeling, and documentation requirements for road transport within Europe. Packages must bear appropriate hazard labels and proper shipping names. Transport vehicles must carry emergency response information, and drivers require ADR training certification. All shipments must comply with international dangerous goods regulations and be accompanied by proper transport documentation.
Is 1H-indole-5,6-diol subject to specific regulations?
1H-indole-5,6-diol is subject to EU REACH regulation requirements for chemical registration, evaluation, and authorization. The substance must be classified and labeled according to CLP regulation, displaying GHS07, GHS05, and GHS09 pictograms with the signal word 'Danger'. While not currently listed as a SVHC (Substance of Very High Concern), it remains subject to standard chemical safety assessments and may be subject to additional national regulations regarding handling, use, and disposal in different EU member states.
Where to buy 1H-indole-5,6-diol in Europe?
1H-indole-5,6-diol is available through OYSI, a specialized European distributor of technical chemicals and pharmaceutical intermediates. OYSI provides this compound to qualified industrial and research customers across Europe, ensuring proper regulatory compliance and documentation. As a hazardous substance requiring specialized handling, purchases are typically restricted to professional users with appropriate facilities and safety measures. Contact OYSI directly for availability, technical specifications, and pricing information for your specific application requirements.
Services for 1H-indole-5,6-diol
Order 1H-indole-5,6-diol
Fast delivery across Europe
SDS Service
Request Safety Data Sheet for 1H-indole-5,6-diol
Technical Consulting
Application advice for 1H-indole-5,6-diol
REACH Safety Data Sheet
REACH Compliance Service
Digital Product Passport
EU-compliant product documentation
ADR Consulting for 1H-indole-5,6-diol
1H-indole-5,6-diol is a dangerous good. We support you with labeling, packaging, and transport documentation.
Data Sources
Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.