A-K-R-R-R-L-S-S-L-R-A ROCK-2 substrate. Price Not Available 2 mg A-K-R-R-R-L-S-S-L-R-A Supplier Page Catalog Number A4369 Molecular Formula C₅₄H₁₀₄N₂₄O₁₄ Purity ≥95% Size 2 mg