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Diaminonaphthalene describes several isomers containing naphthalene substituted with two amine groups (NH 2), also called naphthalenediamines. All isomers are white solids that tend to air-oxidize. The 2,3-, 1,5-, and 1,8- derivatives have attracted most attention. 1,2-Diaminonaphthalene 938-25-0 [1] 1,3-Diaminonaphthalene 24824-28-0 [2]
It is prepared by reduction of 1,5-dinitronaphthalene, which in turn is obtained with the 1,8-isomers by nitration of 1-nitronaphthalene. It can also be prepared by treatment of 1,5-dihydroxynaphthalene with ammonium sulfite. It is a precursor to naphthalene-1,5-diisocyanate, a precursor to specialty polyurethanes. [3]
The 3 substrates of this enzyme are succinyl-CoA, (S)-2,3,4,5-tetrahydropyridine-2,6-dicarboxylate, and H 2 O, whereas its two products are CoA and N-succinyl-L-2-amino-6-oxoheptanedioate. This enzyme belongs to the family of transferases, specifically those acyltransferases transferring groups other than aminoacyl groups. The systematic name ...
1 c. cold eggnog. 1/2 tsp. ground nutmeg, plus more for garnish. 1 (3.4-oz.) box instant vanilla pudding mix. 4 oz. cream cheese, cubed and at room temperature. 1/3 c. powdered sugar. 2 tbsp.
Documents containing Adobe extended features still carry the PDF base version number 1.7 but also contain an indication of which extension was followed during document creation. [21] PDF documents conforming to ISO 32000-2 carry the PDF version number 2.0, and are known to developers as "PDF 2.0 documents".
Brittany and her NFL star husband, 29, announced in July that they are expecting baby No. 3. The high school sweethearts — who tied the knot on March 12, 2020, after 10 years of dating ...
The last few weeks of the year can be a busy and stressful time. Here’s how to focus on what really matters this holiday season, according to experts.
It is a colorless solid. A related isomer is 1,2,3,4-tetrachloro-5-nitrobenzene. It is used as a standard for quantitative analysis by nuclear magnetic resonance. [4] [5] 1,2,4,5-Tetrachloro-3-nitrobenzene is also a fungicide used to prevent dry rot and sprouting on potatoes during storage. [6] [7]
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