CAS Number: 14525-44-1 Linear Formula: C15H16N2O3 Molecular Weight: 272.30 EC Number: 238-542-7

Synonym: 1-Hydroxy-2,5-dione, HOSu CAS Number: 6066-82-6 Linear Formula: C4H5NO3 Molecular Weight: 115.09 Beilstein Registry Number: 113913 EC Number: 228-001-3

Synonym: HOBt Hydrate CAS Number: 123333-53-9 Linear Formula: C6H5N3O · xH2O Molecular Weight: 135.12 (anhydrous basis) Beilstein Registry Number: 4515 EC Number: 219-989-7

Synonym: 1,2,3-Benzotriazole CAS Number: 95-14-7 Linear Formula: C6H5N3 Molecular Weight: 119.12 Beilstein Registry Number: 112133 EC Number: 202-394-1

Synonym: Boc anhydride, Di-tert-butyl pyrocarbonate CAS Number: 24424-99-5 Linear Formula: [(CH3)3COCO]2O Molecular Weight: 218.25 Beilstein Registry Number: 1911173 EC Number: 246-240-1

Synonym: 2-(tert-Butoxycarbonyloxyimino)-2-phenyl­acetonitrile, Boc-ON CAS Number: 58632-95-4 Linear Formula: (CH3)3COCOON=C(C6H5)CN Molecular Weight: 246.26 Beilstein Registry Number: 2217296 EC Number: 261-370-9

Synonym: (S)-1-Chloro-3-tosylamido-4-phenyl-2-butanone, (S)-1-Chloro-4-phenyl-3-tosylamido-2-butanone, Tosyl-L-phenylalanyl-chloromethane, TPCK CAS Number: 402-71-1 Linear Formula: C17H18ClNO3S

Synonym: (3S)-1-Chloro-3-tosylamido-7-amino-2-heptanone hydrochloride, (3S)-7-Ami*-chloro-3-tosylamino-2-heptanone hydrochloride, TLCK, Tosyl-L-lysyl-chloromethane hydrochloride CAS Number: 4272-74-6