N-Acetyl-L-Tryptophan

Key Points for Storing N‑Acetyl‑L‑Tryptophan (NAT)
Short, practical storage rules focusing on moisture, temperature, light, packaging, and shelf life.
1. Temperature Control
Ideal: 2-8°C (refrigerator) for long‑term storage.
Ambient: ≤25°C, cool area; avoid heat sources (direct sunlight, heaters).
Never freeze: Freezing does not damage it but is unnecessary and may cause condensation when thawed.
2. Moisture & Humidity (Critical)
Slightly hygroscopic: Absorbs moisture easily → clumping, degradation risk.
Humidity: Keep at ≤60% RH; dry environment only.
No exposure: Avoid open air, humid workshops, or damp cabinets.
3. Light Protection
Light‑sensitive: UV/strong light accelerates oxidation and discoloration.
Store in dark: Use opaque containers (HDPE, aluminum foil bags, brown glass); avoid transparent packaging.
4. Packaging & Sealing
Original sealed packaging: Keep unopened in factory packaging.
After opening: Transfer to airtight, moisture‑proof container (with desiccant); squeeze out air before sealing.
Materials: HDPE, PP, aluminum foil, or lined drums; avoid paper bags or unlined cardboard.
5. Environment & Compatibility
Clean & odor‑free: Keep away from strong odors (spices, solvents, chemicals) — N-Acetyl-L-Tryptophan absorbs odors easily.
Separate storage: Keep away from strong oxidants, strong acids, and corrosive substances.
No cross‑contamination: Store alone or with similar amino acid products.
6. Shelf Life
Unopened: 24 months (2-8°C or ≤25°C, dry/dark).
Opened: 12 months max (sealed, refrigerated recommended).
Check before use: Discard if yellowing, strong odor, hard clumps, or moisture signs.
7. Quick Recap (Core Rules)
Cool (≤25°C / 2–8°C) + Dry (≤60% RH) + Dark + Airtight sealed + No moisture/light/strong odors
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