Sp Furo - 13

I’m missing context for "sp furo 13" — it could be a chemical (e.g., spiro-furo compound), a journal article code, a product/model name, a music track, or something else. I’ll assume you want an academic-style paper about a spiro[furanyl] (spiro-furo) system with 13-membered ring or a compound named "sp furo 13". I’ll produce a focused, properly structured, compelling paper exploring the chemistry, synthesis, properties, and potential applications of a hypothetical spiro-furan-containing compound dubbed "SP-Furo-13."

• Skin: Wash with soap and water.
• Eyes: Rinse with plenty of water for 15 minutes.
• Ingestion: Do not induce vomiting; seek medical advice if large amount swallowed.

PMC (2021). The FAST-FURO study: Effect of very early administration of diuretics sp furo 13

2. Spiro[cyclopropane-1,3′-furan]-2,5-diones (closely related to "furo" naming)

• Example paper:
  "Diastereoselective Synthesis of Spiro[furan-2,3′-oxindoles] via Cycloaddition Reactions"
  Organic Letters, 2020