Main Page

SDS

Export/import of chemical products

Sustainable Development

International Proficiency Testing Programs

ENG

is a unique identification number of chemical compounds, polymers, biological sequences of nucleotides or amino acids, mixtures and alloys, which are included in the CAS Registry.

CAS registry number (CAS RN, CAS #)

is a division of the American Chemical Society, which assigns CAS RNs to substances described in open scientific literature, since 1957.

Chemical Abstracts Service

How a CAS RN is assigned

Typically, CAS is assigned to new substances, but it is possible to add components and mixtures, which are similar to the already registered ones but are different in physical and chemical properties, and hazard categories.

There are two ways to get a CAS RN:

Our company provides consulting services and full support for the procedure of obtaining a CAS Registry Number.

02

This is a risky method, and it does not guarantee that your substance will be included in the CAS Registry, because there are additional factors involved: the relevance and the language of the article, its citations, the detail with which the substance is described, etc.

Publish an article about a new substance in scientific literature.

01

Order CAS RN assignment