Patent ID: 8450089

Claim:
A method for inhibiting or slowing the growth of L-cystine crystallization in a subject where such growth is present comprising administering to the subject an effective amount of a compound of formula III: or a pharmaceutically acceptable salt, solvate, or prodrug thereof, and stereoisomers, tautomers and isotopic variants thereof; and wherein each R 1a and R 1b is independently selected from H, alkyl, alkenyl, alkynyl, and cycloalkyl; each R 2a , R 2b , R 3a , R 3b , R 3c , R 3d , R 4a , and R 4b is independently selected from H, and alkyl; and each n1 and n2 is independently 0, 1, or 2; provided that when each n1 and n2 is 0, then at least one of R 1a and R 1b is other than H.