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1,2,3,4-Butanetetracarboxylic acid is an organic compound with the formula HO 2 CCH 2 CH(CO 2 H)CH(CO 2 H)CH 2 CO 2 H. It is one of the simplest stable tetracarboxylic acids. The compound exists as two diastereomers, meso and the (R,R)/(S,S) pair. All are white solids. The compound is produced by oxidation of tetrahydrophthalic anhydride. [1]
1,3-Dimethyl-2-imidazolidinone (DMI) is a cyclic urea used as a high-boiling polar aprotic solvent. [2] It is colourless, highly polar solvent has high thermal and chemical stability. It is a homolog of the related solvent DMPU. It can be prepared from 1,2-dimethylethylenediamine by reaction with phosgene.
Most standard size SD cards are 2.1 mm (0.083 inches) [58] thick, with microSD versions being 1.0 mm (0.039 inches) [58] thick, compared to 1.4 mm (0.055 inches) for MMCs. The SD specification defines a card called Thin SD with a thickness of 1.4 mm, [ citation needed ] but they occur only rarely, as the SDA went on to define even smaller form ...
Allylic strain in an olefin. Allylic strain (also known as A 1,3 strain, 1,3-allylic strain, or A-strain) in organic chemistry is a type of strain energy resulting from the interaction between a substituent on one end of an olefin (a synonym for an alkene) with an allylic substituent on the other end. [1]
The bill, which takes effect Jan. 1, was lauded by some as a way to keep costs low for Georgia families. "HB 581 limits increases in property taxes year to year, reforms the appeals process, and ...
1,3-Dinitrobenzene is accessible by nitration of nitrobenzene. The reaction proceeds under acid catalysis using sulfuric acid. The directing effect of the nitro group of nitrobenzene leads to 93% of the product resulting from nitration at the meta-position. The ortho- and para-products occur in only 6% and 1%, respectively. [1]
The end of the year means preparing for the one ahead and the National Association of Realtors is already predicting the hottest housing markets for 2025. The NAR released The Top 10 Housing Hot ...
December 14, 2024 at 1:59 AM Woman riding on e-scooter or electric motorized scooters in city Orthopedists are no stranger to bone breaks, sprains, tears and other traumatic injuries.