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:
“Among a hundred windows shining
dully in the vast side
of greater-than-palace number such-and-such
one burns
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as if the room within were aflame.”
—Denise Levertov (b. 1923)