5,6-Diamino-1,3-dihydro-2H-benzimidazol-2-one
5,6-Diamino-1,3-dihydro-2H-benzimidazol-2-one (CAS: 55621-49-3) is a heterocyclic organic compound with the molecular formula C7H8N4O and a molecular weight of 164.16 g/mol. This benzimidazole derivative serves as a valuable building block in chemical synthesis, particularly for the construction of more complex heterocyclic systems. Its structure lends itself to various applications within organic chemistry and materials science research.
- Synonyms
- 55621-49-3

Organic Synthesis Intermediate
Serves as a key intermediate in the synthesis of novel organic compounds. Its diamino and benzimidazolone functionalities allow for diverse chemical transformations.
Heterocyclic Chemistry Research
Utilised as a building block in academic and industrial research for creating novel heterocyclic structures with potential applications in medicinal chemistry or materials science.
Development of Specialty Chemicals
Can be employed in the development pathway for specialty chemicals where a benzimidazole core is desired for specific functional properties.
| Molecular weight | 164.16 |
|---|---|
| Empirical formula | C7H8N4O |

Hazard statements
- H319Causes serious eye irritation
Precautionary statements
- P305IF IN EYES
| Water hazard class (WGK, DE) | 3 |
|---|---|
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 5,6-Diamino-1,3-dihydro-2H-benzimidazol-2-one used for?
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This compound is primarily used as an intermediate and building block in organic synthesis and heterocyclic chemistry research.
What is the CAS number and formula for 5,6-Diamino-1,3-dihydro-2H-benzimidazol-2-one?
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The CAS number is 55621-49-3 and the empirical formula is C7H8N4O.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this chemical for research and development purposes. The exact grade and purity are available upon request and detailed on the Certificate of Analysis provided with each order. It is not supplied as USP, BP, or EP grade.
How should 5,6-Diamino-1,3-dihydro-2H-benzimidazol-2-one be handled?
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This compound is classified as a Warning with hazard statement H319, indicating it causes serious eye irritation. Always wear appropriate personal protective equipment, including safety glasses, and handle in a well-ventilated area. In case of eye contact, rinse cautiously with water for several minutes and seek medical advice. Follow the precautionary statement P305 + P351 + P338.
Is this chemical a controlled substance?
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Based on the provided data, there is no indication that this compound is a controlled substance.
How is 5,6-Diamino-1,3-dihydro-2H-benzimidazol-2-one packed and shipped?
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This chemical is packed according to industry standards for safe transport and is exported globally by Tech Serve Solutions.
How can I request a sample or quote?
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To request a sample or quote, please contact the Tech Serve Solutions sales team via our website or direct inquiry channels, providing your contact details and the product CAS number (55621-49-3).
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