BPC 157 Arginate Receptor Chem BPC 157 acetate C64H102N16O24 CID 155977614 PubChem Pure BPC 157 500 mcg, 60 capsules ProHealth.com People often ask about the difference between BPC 157 arginate and acetate forms, and the answer comes down to stability and absorption. When were talking about oral BPC 157, the arginate form is far BPC 157 (acetate) (GEPPPGKPADDAGLV, Gly Glu Pro Pro Pro Gly Lys Pro Ala Asp Asp Ala Gly Leu Val, CAS Number: 1628202 19 6) Cayman Chemical BPC 157 Penis Growth: What the Evidence Shows and Realistic Expectations