Specific Rules #3 for Report Title (required) to Citing Entire Reports Vancouver Style: Titles containing a Greek letter, chemical formula, or another special character

Capitalize the first word of a report title unless the title begins with a Greek letter, chemical formula, or another special character that might lose its meaning if capitalized.

alpha-Methyldopa sesquihydrate (feed studies).

1,3-dichloro-5,5-dimethylhydantoin: health-based reassessment of administrative occupational exposure limits.

If a report title contains a Greek letter or some other symbol that cannot be reproduced with the type fonts available, substitute the name for the symbol. For example, Ω becomes omega.

Lindane (γ-hexachlorocyclohexane): health-based recommended occupational exposure limit.

or:

Lindane (gamma-hexachlorocyclohexane): health-based recommended occupational exposure limit.

If a report title contains superscripts or subscripts that cannot be reproduced with the type fonts available, place the superscript or subscript in parentheses

Autoradiographic localization of [125 I]-ricin in lungs and trachea of mice following an aerosol inhalation exposure.

or:

Autoradiographic localization of [(125)I]-ricin in lungs and trachea of mice following an aerosol inhalation exposure.

Según:

Citing Medicine: The NLM Style Guide for Authors, Editors, and Publishers [Internet]. 2nd edition. Chapter 4: Scientific and Technical Reports

Related:

General Rules for Report Title (required) to Citing Entire Reports Vancouver Style

Specific Rules #1: Titles not in English

Specific Rules #2: Titles in more than one language

Specific Rules #3: Titles containing a Greek letter, chemical formula, or another special character

Examples for Report Title (required) to Citing Entire Reports Vancouver Style