Shelf life (days): 1460.0
Formulation: A crystalline solid
Formal Name: N-(4-hydroxyphenyl-2,3,5,6-d4)-acetamide
Purity: ≥99% deuterated forms (d1-d4)
Formula Markup: C8H5D4NO2
Formula Weight: 155.2
CAS Number: 64315-36-2
Notes: Acetaminophen-d4 is intended for use as an internal standard for the quantification of acetaminophen (Item No. 10024 / 22629) by GC- or LC-MS. Acetaminophen is an analgesic and antipyretic compound that inhibits COX-2 activity by more than 80%, albeit at relatively high doses, while it is less effective against COX-1.{29484} Acetaminophen-d4 is also available as an analytical reference standard (Item No. 22645)