enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Malononitrile - Wikipedia

    en.wikipedia.org/wiki/Malononitrile

    NCCl + CH 3 CN → NCCH 2 CN + HCl. About 20,000,000 kg are produced annually (2007). Important outlets include the synthesis of thiamine, the drug triamterene and minoxidil, and the dyes disperse Yellow 90 and disperse Blue 354. [4] Malononitrile is relatively acidic, with a pK a of 11 in water. [5]

  3. List of CAS numbers by chemical compound - Wikipedia

    en.wikipedia.org/wiki/List_of_CAS_numbers_by...

    Be(NO 3) 2: beryllium nitrate: 13597–99–4 Be(NO 3) 2 •4H 2 O: beryllium nitrate tetrahydrate: 13510–48–0 Be(NO 3) 2 •3H 2 O: beryllium nitrate trihydrate: 7787–55–5 BeO: beryllium oxide: 1304–56–9 Be(OH) 2: beryllium hydroxide: 13327–32–7 BeS: beryllium sulfide: 13598–22–6 BeSO 4: beryllium sulfate: 13510–49–1 ...

  4. Solvent Yellow 7 - Wikipedia

    en.wikipedia.org/wiki/Solvent_Yellow_7

    Like most azobenzenes, Solvent Yellow 7 can be synthesized by the reaction of the phenyldiazonium salt with phenol.The optimal pH value for this azo coupling is 8.5-10. The reaction is carried out in water, since sodium chloride (or potassium chloride) formed in the reaction is soluble in water, while the product precipitates.

  5. Diaminomaleonitrile - Wikipedia

    en.wikipedia.org/wiki/Diaminomaleonitrile

    Diaminomaleonitrile has been proposed since the 1960s as a key substance for the prebiotic synthesis of nucleobases.Photochemical rearrangement of DAMN under UV light gives 4-aminoimidazole-5-carbonitrile (AICN), which can react further to form various nucleobases.

  6. Carbonyl cyanide m-chlorophenyl hydrazone - Wikipedia

    en.wikipedia.org/wiki/Carbonyl_cyanide_m-chloro...

    Carbonyl cyanide m-chlorophenyl hydrazone (CCCP; also known as [(3-chlorophenyl)hydrazono]malononitrile) is a chemical inhibitor of oxidative phosphorylation. It is a nitrile , hydrazone and protonophore .

  7. Ethyl cyanoacetate - Wikipedia

    en.wikipedia.org/wiki/Ethyl_cyanoacetate

    As a safe cyanide-donor reagent [10] Nucleophilic attack at the ester group, as part of acyl substitution: reaction with ammonia leads to cyanoacetamide, which can be converted by dehydration with PCl 5 or POCl 3 to malononitrile. [11] Via the acidic methylene group as a nucleophile

  8. Worcester schools tout lower suspension rates, higher sense ...

    www.aol.com/worcester-schools-tout-lower...

    Data presented by the district states that through 50 days of the school year, Worcester Public Schools students have missed a combined 255 days of school due to out-of-school suspensions, down ...

  9. Tetracyanoethylene - Wikipedia

    en.wikipedia.org/wiki/Tetracyanoethylene

    TCNE is prepared by brominating malononitrile in the presence of potassium bromide to give the KBr-complex, and dehalogenating with copper. [1] Oxidation of TCNE with hydrogen peroxide gives the corresponding epoxide, which has unusual properties. [2] In the presence of base, TCNE reacts with malononitrile to give salts of pentacyanopropenide: [3]