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AMA Manual of Style Committee

Contents

Prime

Chapter:
Punctuation
Author(s):

Cheryl Iverson

8.7.7 Prime

Do not use an apostrophe where a prime sign is intended. Do not use a prime sign as a symbol of measurement. (See also 15.4.4, Nomenclature, Drugs, Chemical Names.)

The methyl group was in the 5′ position.