CAS registry number facts for kids
A CAS registry number is a unique number given to every chemical substance by the Chemical Abstracts Service (CAS). It is also called CASRN or CAS number. CAS registry number is also given to organic, inorganic compounds, minerals, isotopes, alloys. They are numbers ending with a check digit. They do not contain any structure information of the chemical.
Images for kids
Screenshot of the CAS Common Chemistry database with information about caffeine (58-08-2).
In Spanish: Número de registro CAS para niños
CAS registry number Facts for Kids. Kiddle Encyclopedia.