CAS Number
Every chemical substance, including chemical compounds, that has been described in the literature carries a unique numerical identifier, its CAS number.
Read more about this topic: Chemical Compound
Famous quotes containing the word number:
“... in every State there are more women who can read and write than the whole number of illiterate male voters; more white women who can read and write than all Negro voters; more American women who can read and write than all foreign voters.”
—National Woman Suffrage Association. As quoted in History of Woman Suffrage, vol. 4, ch. 13, by Susan B. Anthony and Ida Husted Harper (1902)