There is a Remastered version
here.
Bestial Mutagen
Item 1+Legacy Content
Alchemical Consumable Elixir Mutagen Polymorph 
Source Core Rulebook pg. 546 4.0Usage held in 1 hand;
Bulk L
Activate [one-action] Interact
Your features transform into something bestial and you take on muscle mass, but your lumbering form is clumsy.
Benefit You gain an item bonus to Athletics checks and unarmed attack rolls. You gain a claw unarmed attack with the agile trait and a jaws unarmed attack.
Drawback You take a –1 penalty to AC and a –2 penalty to Reflex saves.
Bestial Mutagen (Lesser)Item 1
Source Core Rulebook pg. 546 4.0Price 4 gp
Bulk L
You gain a +1 item bonus, your claw deals 1d4 slashing damage, your jaws deal 1d6 piercing damage, and the duration is 1 minute.
Bestial Mutagen (Moderate)Item 3
Source Core Rulebook pg. 546 4.0Price 12 gp
Bulk L
You gain a +2 item bonus, your claw deals 1d6 slashing damage, your jaws deal 1d8 piercing damage, and the duration is 10 minutes.
Bestial Mutagen (Greater)Item 11
Source Core Rulebook pg. 546 4.0Price 300 gp
Bulk L
You gain a +3 item bonus, your claw deals 1d8 slashing damage, your jaws deal 1d10 piercing damage, and the duration is 1 hour.
Bestial Mutagen (Major)Item 17
Source Core Rulebook pg. 546 4.0Price 3,000 gp
Bulk L
You gain a +4 item bonus, your claw deals 1d8 slashing damage, your jaws deal 1d10 piercing damage, and the duration is 1 hour. You gain weapon specialization with the claws and jaws, or greater weapon specialization, if you already have weapon specialization with these unarmed attacks.