The more detailed the search terms are, the easier to find the target product, while a concise and general search word may show a wide range of results for a further selection. To avoid returning too many unrelated results, only the boolean AND is used in multiple keyword  searching strings.For instance, when searching methyl alcohol,
propyl alcohol or methyl bromide will never be returned. For accurate searching
the double quotation mark can be used.
The keywords are not case-sensitive. How to search by CAS registry number ?
You must use valid formats to enter a CAS number or its segments for search.
Only numbers and the dash mark are acceptable. The longest complete CAS number has the form of 123456-78-9. The first set of numbers may vary from 1 to 6 digits, while the third and the second sets can only hold 1 and 2 digits, respectively. The following valid search terms provide various results:
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