Chemists love to tinker with cyclodextrins (CDs)—macrocyclic daisy chains of glucose molecules that feature a hydrophobic core surrounded by a hydrophilic exterior. They’ve been used to encapsulate drugs, in air fresheners to sop up smelly molecules, and in water purification systems to capture and destroy micropollutants. Structure of alpha-L-cyclodextrin Now, more than 130 years after their discovery, CDs are finally getting a glimpse of their mirror image. For the first time, chemists have synthesized L-CDs using the unnatural sugar L-glucose.

Quinaldine Fish Anesthetic for Shipping Quinaldine Quinaldine is a yellowish, oily liquid with limited water solubility that must be dissolved in acetone or alcohol before it is mixed with water. While it is an effective anesthetic, it is an irritant to fish, has an unpleasant odor, and is a carcinogen. The low cost of quinaldine has made it a popular tool for collecting tropical fish for the aquarium trade, as well as in the bait and sport fish industries. Quinaldine sulfonate is a pale yellow, water-soluble powder; it is more costly than quinaldine or MS-222.

What to know about plant growth regulators Is this the year you should try PGRs in your crop management program? EARLY-SEASON DEVELOPMENT: Crop scouting and digging indicate these seedlings are off to a strong start. Jon Zuk with WinField United believes the right PGR products help ensure that result. WINFIELD UNITED Would you try a product if you’d never heard of that category of compounds? Odds are you would say, “No thanks.” But what if your input supplier suggested a product with a proven track record for increasing yields? The term “PGR” may mean nothing to you. On the other hand, a 3-bushel-per-acre corn yield increase over time in reputable plots might be worth investigating.

Montelukast will carry ‘more prominent warnings’ of neuropsychiatric reactions The Medicines and Healthcare products Regulatory Agency also advised prescribers to be alert for neuropsychiatric reactions, including sleep disorders, hallucinations, anxiety and depression, and changes in behaviour and mood. Further safety measures will be introduced for montelukast, a drug used for the treatment of asthma, to ensure patients are informed of the risk of neuropsychiatric reactions, following a safety review.

CPHI & PMEC China 2024 returns to Shanghai with unprecedented global participation amid soaring pharma demand China's premier pharmaceutical event sees record-breaking attendance, fueled by post-pandemic demand surge and regional market expansion. Featuring 3500 exhibitors and 60,000 attendees, the event showcases the dynamic growth and innovation across Asia's pharmaceutical supply chain. CPHI & PMEC China (June 19-21st) returns to the Shanghai New International Expo Center amid soaring demand across the pharmaceutical supply chain in Asia. China, already the primary source of pharmaceutical ingredients and starting materials globally, has also seen domestic demand improve rapidly post-pandemic. Consequentially, exhibitors are reporting robust growth across most Asian countries, with expected attendance significantly up year-on-year.

Optimized amide bond reaction using heterocyclic compounds and carboxylic acid TOHOKU UNIVERSITY DMAPO and Boc2O chemicals and a single reaction vessel IMAGE: OPTIMIZED REACTION CONDITIONS FOR AMIDE BOND FORMATION IN NITROGEN-CONTAINING HETEROCYCLIC COMPOUNDS USING CARBOXYLIC ACID REQUIRES ONLY 4-(N,N-DIMETHYLAMINO)PYRIDINE N-OXIDE (DMAPO) AND DI-TERTBUTYL DICARBONATE (BOC2O) IN A SINGLE REACTION VESSEL. A high-yield, one-pot, scalable reaction facilitates the production of biologically relevant amide compounds using less reactive nitrogen-containing heterocyclic compounds and carboxylic acid without the use of heat or special equipment.