If "r74" is a typo of SR-74 (a synthetic cannabinoid receptor agonist), creating an article about it as if it were "snuff" would be both inaccurate and harmful. Synthetic cannabinoids have been linked to life-threatening toxicity, including seizures, acute kidney injury, and psychosis.
The word "snuff" historically refers to a persistent urban legend regarding underground films that capture actual, non-simulated murders for profit. Snuff (1975) - IMDb snuff r74