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3,4-Dihydro-2(1H)-quinolinone

CAS 553-03-7C9H9NOChemical Synthesis

3,4-Dihydro-2(1H)-quinolinone (CAS 553-03-7) is a heterocyclic organic compound with the molecular formula C9H9NO and a molecular weight of 147.17 g/mol. This white to off-white solid, also known as Hydrocarbostyril, serves as a versatile building block in chemical synthesis. Its structure lends itself to the creation of more complex molecules, particularly within the pharmaceutical and fine chemical industries. It is supplied by TSS with an assay of 98%.

IUPAC
Hydrocarbostyril
Synonyms
Hydrocarbostyril
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3,4-Dihydro-2(1H)-quinolinone (C9H9NO) — chemical structure, CAS 553-03-7; Chemistry, fine chemical supplied by Tech Serve Solutions
Building BlocksC8 to C10Chemical SynthesisHeterocyclic Building BlocksQuinolines
01 /Applications

Pharmaceutical Intermediate

3,4-Dihydro-2(1H)-quinolinone is utilised as a key intermediate in the synthesis of various active pharmaceutical ingredients (APIs). Its heterocyclic scaffold is frequently incorporated into drug discovery programs targeting diverse therapeutic areas.

Chemical Synthesis Building Block

As a functionalised quinoline derivative, this compound is a valuable reagent for organic chemists. It enables the construction of complex molecular architectures through established synthetic methodologies.

Research and Development

The compound finds application in academic and industrial research laboratories for exploring new chemical reactions and developing novel compounds with potential biological activities.

02 /Properties
Molecular weight147.17
Empirical formulaC9H9NO
Assay98%
Melting point165-167 °C(lit.)
03 /Safety & handling
GHS hazard pictogram: Harmful / irritant (GHS07)
Harmful / irritant
Warning

Hazard statements

  • H302Harmful if swallowed
  • H315Causes skin irritation
  • H317May cause an allergic skin reaction
  • H319Causes serious eye irritation
  • H335May cause respiratory irritation

Precautionary statements

  • P261Avoid breathing dust, fume, gas or vapours
  • P280Wear protective gloves, clothing and eye/face protection
  • P305IF IN EYES
Water hazard class (WGK, DE)3
Hazard codes (EU)Xn
Risk statements (R)22-36/37/38-43
Safety statements (S)26-36/37

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry
CAS number
553-03-7
MDL number
MFCD00016722
05 /Quality & supply

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.

06 /Frequently asked questions

What is 3,4-Dihydro-2(1H)-quinolinone used for?

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3,4-Dihydro-2(1H)-quinolinone is primarily used as a building block in chemical synthesis, particularly as an intermediate in the pharmaceutical industry for the creation of active pharmaceutical ingredients, and in research and development laboratories.

What are the CAS number and formula for 3,4-Dihydro-2(1H)-quinolinone?

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The CAS number for 3,4-Dihydro-2(1H)-quinolinone is 553-03-7, and its empirical formula (Hill notation) is C9H9NO.

What grade and purity does Tech Serve Solutions supply?

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Tech Serve Solutions supplies 3,4-Dihydro-2(1H)-quinolinone with an assay of 98%. TSS does not represent this product as USP, BP, EP, or any pharmacopoeia grade.

How should 3,4-Dihydro-2(1H)-quinolinone be handled?

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3,4-Dihydro-2(1H)-quinolinone is classified with GHS07 symbol and a Warning signal word. It carries hazard statements H302 (Harmful if swallowed), H315 (Causes skin irritation), H317 (May cause an allergic skin reaction), H319 (Causes serious eye irritation), and H335 (May cause respiratory irritation). Handle with appropriate personal protective equipment, avoiding contact with skin, eyes, and clothing, and ensure adequate ventilation. Refer to the Safety Data Sheet for full handling instructions.

How is 3,4-Dihydro-2(1H)-quinolinone packed, shipped, and exported?

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Tech Serve Solutions expertly packs, ships, and exports fine chemicals globally, adhering to all relevant regulations for safe and secure transit.

How can I request a sample or a quote for 3,4-Dihydro-2(1H)-quinolinone?

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To request a sample or a quote for 3,4-Dihydro-2(1H)-quinolinone, please contact the TSS sales team through the website or by phone.

Need 3,4-Dihydro-2(1H)-quinolinone in a specific grade or volume?