CAS 21435-27-8 appears in our catalog under these names: H-Ser-Tyr-OH, >95% (HPLC), H–Ser–Tyr–OH, H-Ser-Tyr-OH, H-Ser-Tyr-OH, 98.87%. Offered by: TRC, GLPBio, Biosynth, MedChemExpress. Available pack sizes: 100mg, 10mg, 50mg, 1g, 250mg, 100 mg, 50 mg, 10 mg.