Okay, the user wants me to translate "boron compounds" into Japanese. Let me check the rules again. The first rule says to translate all content into Japanese. The second rule states that if the content is already in Japanese, leave it as is. The third rule is to provide only the translation without any explanations.
So, "boron compounds" is in English. I need to translate it. The correct translation for "boron compounds" in Japanese is "ボロン化合物". I should make sure there's no typo. Let me confirm the kanji and kana. "ボロン" is the correct katakana for boron, and "化合物" is the standard term for compounds.
No need to add anything else. The user specified to respond with just the translation. So I'll output "ボロン化合物" without any extra text or explanations.