Pharmaceutical Reference Materials, QC Reference Materials - Chemistry Naproxen Sodium Part # PH2312 USP Traceable QC Reference Material Naproxen Sodium CAS No. 26159-34-2. read more This product is available for purchase on our new website at zeptometrix.com. Order online today or call our team at +1.800.274.5487. Catalog Number: N/A Tags: pharmaceutical standard, USP tag Size 1 gram Analyte COA's MSDS/SDS Analyte Salicylic Acid CAS #69-72-7 COA's MSDS/SDS Related products Quick View Add to cart Compare Pharmaceutical Reference Materials Benzoic Acid Part#PH541 Quick View Add to cart Compare Pharmaceutical Reference Materials Naproxen-Na Quick View Add to cart Compare Pharmaceutical Reference Materials A. brasiliensis #61-00053 Quick View Add to cart Compare Pharmaceutical Reference Materials Tartaric acid Part#PH636