CAS NO. 38752-29-3 | (3S,4S)-4-[[[(3S,4S)-4-[[N-(1-Oxohexyl)-L-Val-L-Val-]amino]-3-hydroxy-6-methylheptanoyl]-L-Ala-]amino]-3-hydroxy-6-methylheptanoic acid |

(3S,4S)-4-[[[(3S,4S)-4-[[N-(1-Oxohexyl)-L-Val-L-Val-]amino]-3-hydroxy-6-methylheptanoyl]-L-Ala-]amino]-3-hydroxy-6-methylheptanoic acid

Pepstatin B	1-[N-(1-Oxohexyl)-L-valyl]pepstatin A
(3S,4S)-4-[[[(3S,4S)-4-[[N-(1-Oxohexyl)-L-Val-L-Val-]amino]-3-hydroxy-6-methylheptanoyl]-L-Ala-]amino]-3-hydroxy-6-methylheptanoic acid