Chemical Identity and Properties

2-Amino-3,7,8-trimethyl-3H-imidazo[4,5-f]quinoxaline belongs to the class of heterocyclic aromatic amines (HAAs), a structurally diverse group of mutagenic and potentially carcinogenic compounds. The compound features a fused bicyclic imidazo[4,5-f]quinoxaline core with amino and methyl substituents at positions 2, 3, 7, and 8, conferring planar aromatic character conducive to intercalation into double-stranded DNA.

HAAs of this structural family are generally solid at room temperature with relatively high melting points, limited aqueous solubility, and moderate solubility in polar organic solvents such as DMSO and methanol. Researchers should consult the product-specific Certificate of Analysis (CoA) and Safety Data Sheet (SDS) provided by Aladdin Scientific for confirmed physicochemical data, including exact molecular weight, purity, and spectroscopic characterization for lot A331376.

Research Applications

2-Amino-3,7,8-trimethyl-3H-imidazo[4,5-f]quinoxaline is employed primarily as a reference standard or model substrate in the following research contexts:

• Mutagenicity and genotoxicity assays: The compound serves as a positive control or test article in Ames Salmonella assays and mammalian cell mutation assays to evaluate the mutagenic potential of HAAs and related structures.
• Metabolic activation studies: Like other imidazo-quinoxaline HAAs, this compound undergoes N-hydroxylation by cytochrome P450 enzymes (notably CYP1A2) followed by O-acetylation or sulfonation, forming reactive electrophilic intermediates. It is used to probe the role of phase I and phase II enzymes in HAA bioactivation.
• DNA adduct formation and repair: Researchers use this compound to generate and characterize specific HAA-derived DNA adducts, enabling mechanistic studies of adduct formation, mutagenic spectra, and nucleotide excision repair.
• Analytical method development: As a structurally defined HAA, it functions as an analytical reference standard for LC-MS/MS, HPLC, and immunoassay methods aimed at detecting HAAs in food matrices or biological samples.

Due to its mutagenic properties, all experimental work should be conducted under appropriate biosafety containment with institutional approval where required.

Handling, Safety, and Storage Guidelines

Hazard classification: 2-Amino-3,7,8-trimethyl-3H-imidazo[4,5-f]quinoxaline is a suspected mutagen and should be treated as a hazardous substance. Always consult the current SDS before use.

Personal protective equipment (PPE): Wear appropriate chemically resistant gloves, a laboratory coat, and eye protection. When handling powders, use a well-ventilated fume hood or biosafety cabinet to minimize inhalation risk.

Storage: Store the compound in a tightly sealed container in a cool, dry location protected from light and incompatible materials such as strong oxidizers. Specific temperature requirements (e.g., 2–8 °C or −20 °C) should be confirmed on the product label and CoA supplied with lot A331376.

Waste disposal: Dispose of all waste, including contaminated consumables, in accordance with local, national, and institutional regulations governing mutagenic chemical waste.

Spill management: Contain spills immediately using inert absorbent material. Avoid generating dust. Decontaminate affected surfaces with a suitable agent per institutional guidelines and document any spill incident.

Formulation and Solubility Recommendations

Due to its aromatic fused-ring structure, 2-Amino-3,7,8-trimethyl-3H-imidazo[4,5-f]quinoxaline exhibits limited solubility in water. The following formulation strategies are recommended based on general HAA solubility principles:

• DMSO stock solutions: Dissolve the compound in anhydrous DMSO to prepare concentrated stock solutions (e.g., 10–50 mM). Aliquot and store at −20 °C under inert atmosphere to minimize degradation. Final DMSO concentration in assay media should generally not exceed 0.1–0.5% to avoid cytotoxic artifacts.
• Methanol or ethanol: These solvents may be used for analytical applications; ensure complete evaporation before reconstitution in aqueous buffers when required.
• Acidified aqueous solutions: Dilute acidic conditions (e.g., 0.1 M HCl) may improve solubility for certain assay formats; verify compatibility with the experimental system.

Always prepare fresh working solutions or validate stability of stored aliquots before use. Confirm solubility for each new lot using the CoA provided with the product.

Quality, Purity, and Ordering Information

Aladdin Scientific offers 2-Amino-3,7,8-trimethyl-3H-imidazo[4,5-f]quinoxaline under SKU A331376. Each lot is accompanied by a Certificate of Analysis detailing purity, identity confirmation (NMR, HPLC, or MS), and lot-specific physicochemical data.

Purity: Consult the CoA for the specific lot purity. For sensitive mutagenicity assays and quantitative analytical work, use only lots meeting the purity threshold specified in your experimental protocol. If higher purity grades are required, contact Aladdin Scientific technical support.

Cross-reference: This product is cross-referenced with Santa Cruz catalog number sc-209030 to assist researchers transitioning between suppliers or validating alternative sources.

Ordering: Place orders through the Aladdin Scientific online catalog or contact your regional sales representative. Custom quantities and bulk orders may be available upon request. For regulatory compliance (e.g., export control or controlled substance requirements), confirm applicable regulations with your institution prior to purchase.