How Cyclopentane (CAS 287-92-3) Escaped the Refinery Sidestream, Became the Fridge Industry's A-Lister—and Saved the Ozone Layer as a Side Gig...

CAS 577-11-7, Dioctyl Sodium Sulfosuccinate, is the Swiss-army knife of chemistry most people have never heard of—yet it's probably closer to you right now than your phone.

When you picture Prussian blue—the first modern synthetic pigment, the hue of Hokusai's "Great Wave" & Napoleon's uniforms—you're really picturing the ghost of CAS 14459-95-1: Potassium Ferrocyanide Trihydrate, K₄[Fe(CN)₆]·3H₂O, also known as "yellow prussiate of potash".

Tert-Butylhydroquinone (TBHQ) （CAS 1948-33-0）is a proven and safe tool in modern food production.

p-Toluenesulfonyl chloride (CAS 98-59-9) is a versatile, highly reactive sulfonating agent essential in pharmaceuticals, agrochemicals, and specialty chemicals. Its tosyl group functionality makes it a cornerstone in organic synthesis, despite requiring careful handling due to its corrosive and moisture-sensitive nature.

The chemical substance with CAS Registry Number 27274-31-3 is most commonly known as Allyloxy polyethylene glycol (abbreviated as APEG).