Just try own or following examples:

Enter exact TERM Examples Hit
CHEMICAL DESCRIPTION Bilirubin
Biotin
all hits: Bilirubin
all hits: Biotin
CHEMICAL DESCRIPTION & CAS Biotin 58-85-5 Biotin
CAS 67-63-0
"67-63-0"
all substances figure combination 67-63-0
Input of "67-63-0" shows ISOPROPANOL, only
EINECS 263-120-4 named in EU regulations, only
EC Index 603-117-00-0 named in EU regulations, only
FORMULA SUM C3H8O
"C3H8O"
all substances with figure combination C3H8O
C3H8O ISOMERS, only
GREEK PREFIX ψ Chemical Description containing ψ
TRADENAME Example Example
Supplier www.supplier.com Supplier
Application: TRIVIAL DESCRIPTION nickel catalyst Nickel Derivatives
Application: CLP (GHS) nickel catalyst Nickel Derivatives


Enter free STRING(S)
SingleString(s) no/with empty space laurylsulf
lauryl sulf
2 hits
40 hits
any order separated by empty space butan sulf pot
sulf pot butan
pot sulf butan
identical hits
any strings α γ amid hits containing these strings
ENGLISCH & LOCAL LANGUAGE, parallely butan sulf kal
sulf kal butan
kal sulf butan
less hits because less substances by bilingual entry EN/DE, i.e. instead of potassium used kalium)
The figure -sulf excludes hits containing "sulf"
try difference C8-18 versus C8 -18
quat C8-18 -cl -br
quat C8 -18 -cl -br
C8-18 derivatives without CHLORIDE or BROMIDE
C8 derivatives without CHLORIDE or BROMIDE, no 18 anywhere