Biotin-NHCH2CH2-SS-Pyr Product Catalog # Size Price (USD) Quantity Biotin-NHCH2CH2-SS-Pyr271402-500MG500 mg$650.00 - Biotin-NHCH2CH2-SS-Pyr-500mg quantity + Biotin-NHCH2CH2-SS-Pyr271402-1G1 g$1,050.00 - Biotin-NHCH2CH2-SS-Pyr-1g quantity + Add to cart Description CAS #: 112247-65-1 Molecular Formula: C17H24N4O2S3 Molecular Weight: 412.6