Xanthene
Xanthene (9H-xanthene, 10H-9-oxaanthracene) is the organic compound with the formula CH2[C6H4]2O. It is a yellow solid that is soluble in common organic solvents. Xanthene itself is an obscure compound, but many of its derivatives are useful dyes.[2]
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| Names | |
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| IUPAC name
9H-Xanthene | |
| Other names
Dibenzo[a,e]pyran 10H-9-oxaanthracene | |
| Identifiers | |
3D model (JSmol) |
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| ECHA InfoCard | 100.001.996 |
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PubChem CID |
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CompTox Dashboard (EPA) |
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| Properties | |
| C13H10O | |
| Molar mass | 182.222 g·mol−1 |
| Appearance | Yellow solid |
| Melting point | 101 to 102 °C (214 to 216 °F; 374 to 375 K)[1] |
| Boiling point | 310 to 312 °C (590 to 594 °F; 583 to 585 K)[1] |
| Hazards | |
| R-phrases (outdated) | R42 R43 |
| S-phrases (outdated) | S22 S36 S37 S45 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). | |
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Xanthene dyes
Rhodamines are commercial dyes with xanthene cores.
Dyes that contain a xanthene core include fluorescein, eosins, and rhodamines. Xanthene dyes tend to be fluorescent, yellow to pink to bluish red, brilliant dyes. Many xanthene dyes can be prepared by condensation of derivates of phthalic anhydride with derivates of resorcinol or 3-aminophenol.
Further reading
- Neckers, Douglas C.; Valdes-Aguilera Oscar M. (1993). "Photochemistry of the Xanthene Dyes". Advances in Photochemistry. 18: 315–94. doi:10.1002/9780470133491.ch4.CS1 maint: uses authors parameter (link)
gollark: This example code responds to ~ping with Pong!
gollark: ACTUAL feature suggestions?
gollark: It's glorious.
gollark: ```rust#[macro_use] extern crate serenity;use serenity::client::{Client, EventHandler};use serenity::framework::standard::StandardFramework;use std::env;struct Handler;impl EventHandler for Handler {}pub fn main() { // Login with a bot token from the environment let mut client = Client::new(&env::var("DISCORD_TOKEN").expect("token"), Handler) .expect("Error creating client"); client.with_framework(StandardFramework::new() .configure(|c| c.prefix("~")) .cmd("ping", ping)); if let Err(why) = client.start() { println!("An error occurred while running the client: {:?}", why); }}command!(ping(_context, message) { let _ = message.reply("Pong!");});```This is the example code, admittedly, yes.
gollark: It's in Rust.
See also
References
- Xanthene at Sigma-Aldrich
- Gessner, Thomas; Mayer, Udo (2000). "Triarylmethane and Diarylmethane Dyes". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a27_179.
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