[CAS Number 1007844-34-9] Codeine-D6 is a stable-labeled internal standard used for the quantification of codeine.monohydrate. Codeine.monohydrate is classified as an opioid agonist with analgesic, antidiarrheal, and antitussive properties. Sometimes referred to as a narcotic, codeine is used to treat moderate to severe pain and reduce coughing when used in combination with other medicines. Similar to other opioids, codeine.monohydrate is commonly abused. Codeine-D6 is available as reference material (bulk powder and/or solution) and as calibrated, Ready-to-Use, certified reference material (CRM). This product is designed for qualitative and quantitative protocols and can be used for forensic, toxicology, research, and other chemical/biochemical analytical applications.