Description

Coumarin 30 (CAS No. 41044-12-6) is a high-purity fluorescent dye with the molecular formula C₂₁H₂₁N₃O₂, widely utilized in advanced photophysical and biochemical research. This compound, also known by its IUPAC name 7-(diethylamino)-3-(1-methylbenzimidazol-2-yl)chromen-2-one, exhibits exceptional Stokes shifts and strong emission in the blue-green spectrum (~500 nm), making it ideal for laser dyes, fluorescence microscopy, and sensor applications. Its benzimidazole and diethylamino substituents enhance photostability and solvatochromic properties, allowing for precise environmental probing. Available in >98% purity (HPLC), Coumarin 30 is supplied as a crystalline powder with strict quality controls for batch-to-batch consistency. Store desiccated at 2-8°C, protected from light.

Properties

• CAS Number: 41044-12-6
• Complexity: 559
• IUPAC Name: 7-(diethylamino)-3-(1-methylbenzimidazol-2-yl)chromen-2-one
• InChI: InChI=1S/C21H21N3O2/c1-4-24(5-2)15-11-10-14-12-16(21(25)26-19(14)13-15)20-22-17-8-6-7-9-18(17)23(20)3/h6-13H,4-5H2,1-3H3
• InChI Key: KZFUMWVJJNDGAU-UHFFFAOYSA-N
• Exact Mass: 347.16337692
• Molecular Formula: C21H21N3O2
• Molecular Weight: 347.4
• SMILES: CCN(CC)C1=CC2=C(C=C1)C=C(C(=O)O2)C3=NC4=CC=CC=C4N3C
• Topological: 47.4
• Monoisotopic Mass: 347.16337692
• Physical Description: Solid;
• Synonyms: Coumarin 30, 7-(Diethylamino)-3-(1-methyl-2-benzimidazolyl)coumarin, 2H-1-Benzopyran-2-one, 7-(diethylamino)-3-(1-methyl-1H-benzimidazol-2-yl)-, CCRIS 4959, EINECS 255-186-8, NSC 290433, 7-(Diethylamino)-3-(1-methyl-1H-benzimidazol-2-yl)-2-benzopyrone, DTXSID6068272, DTXCID0039851, 255-186-8, chebi:51939, 41044-12-6, 7-(diethylamino)-3-(1-methylbenzimidazol-2-yl)chromen-2-one, 7-(diethylamino)-3-(1-methyl-1H-benzo[d]imidazol-2-yl)-2H-chromen-2-one, 3-(2-N-Methylbenzimidazolyl)-7-N,N-diethylaminocoumarin, NSC290433, CT7C6AR5DD, 2H-1-Benzopyran-2-one,7-(diethylamino)-3-(1-methyl-1H-benzimidazol-2-yl)-, MLS000106045, MLS002702129, 7-(DIETHYLAMINO)-3-(1-METHYL-1,3-BENZODIAZOL-2-YL)CHROMEN-2-ONE, 7-(Diethylamino)-3-(1-methyl-1H-benzimidazol-2-yl)-2H-chromen-2-one, NSC-290433, SMR000103016, 7-(diethylamino)-3-(1-methyl-1H-1,3-benzodiazol-2-yl)-2H-chromen-2-one, MFCD00051349, UNII-CT7C6AR5DD, ChemDiv2_003295, Oprea1_444456, Oprea1_613472, CBDivE_006016, SCHEMBL457303, cid_100335, CHEMBL1520346, BDBM79817, KZFUMWVJJNDGAU-UHFFFAOYSA-N, HMS1378F17, HMS2466I04, REGID_FOR_CID_100335, Coumarin 30, Dye content 99 %, SBB059432, STK996890, 7-(Diethylamino)-3-(1-methyl-1H-benzimidazol-2-yl)-2H-1-benzopyran-2-one, AKOS000505564, CID 100335, FD62153, AS-73053, BP-41774, DA-06046, NCI60_002384, PD118778, C2837, CS-0094875, NS00030902, ST50216053, SR-01000389309, SR-01000389309-1, 7-(diethylamino)-3-(1-methylbenzimidazol-2-yl)coumarin, 3-(N-methyl-benzoimidazol-2-yl)-7-(diethylamino)-coumarin, Coumarin, 7-(diethylamino)-3-(1-methyl-2-benzimidazolyl)-, 7-(Diethylamino)-3-(1-methyl-1H-benzimidazol-2-yl)coumarin, 7-(diethylamino)-3-(1-methyl-2-benzimidazolyl)-1-benzopyran-2-one, Coumarin 30;3-(2-N-Methylbenzimidazolyl)-7-N,N-diethylaminocoumarin

Application

Coumarin 30 is extensively employed as a laser dye in tunable dye lasers due to its high quantum yield and broad emission range. In biochemistry, it serves as a fluorescent probe for membrane potential studies and protein labeling. The compound’s solvatochromism enables microenvironment polarity sensing in polymers and nanomaterials. Additionally, it finds use in OLED research as a blue-green emitter and in forensic science for latent fingerprint detection.

Safety and Hazards

GHS Hazard Statements

• H315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (100%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H335 (97.5%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]

Precautionary Statements

• P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Skin Irrit. 2 (100%)
• Eye Irrit. 2 (100%)
• STOT SE 3 (97.5%)

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