Specification Sheet
Product Name Rifaximin,
VETRANAL, analytical standard
Product Number 33999
Product Brand SIAL
CAS Number 80621-81-4
Molecular Weight 785.88
 
TEST SPECIFICATION
APPEARANCE (COLOR) Light Yellow to Very Dark Yellow to Very Dark Orange
APPEARANCE (FORM) Powder or Crystals
PURITY (HPLC AREA %) ≥ 98.0 %
MELTING POINT 209 - 215 C
WATER ≤ 8.0 %
PROTON NMR SPECTRUM CONFORMS TO STRUCTURE
RECOMMENDED RETEST PERIOD 48 MONTHS