"9rF,10tF,11r'F,12t'F-tetrahydroxy-octadecanoic acid" is a complex organic compound with a long-chain hydrocarbon structure, specifically an octadecanoic acid, which means it has 18 carbon atoms in its backbone. The compound is characterized by the presence of four hydroxyl (-OH) groups at specific positions along the chain, which are crucial for its chemical properties and potential applications. The "9rF,10tF,11r'F,12t'F" notation indicates the stereochemistry and the position of these hydroxyl groups: "9rF" and "11r'F" suggest that the hydroxyl groups at the 9th and 11th carbons are in the "r" (rectus) configuration, while "10tF" and "12t'F" indicate that the hydroxyl groups at the 10th and 12th carbons are in the "t" (tortus) configuration. This specific arrangement of hydroxyl groups and the stereochemistry at these positions can significantly influence the compound's reactivity, solubility, and potential biological activity. The compound's structure and properties make it a subject of interest in fields such as chemistry, biochemistry, and pharmacology, where understanding the impact of stereochemistry on molecular function is critical.
The CAS Registry Mumber 87-93-4 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 7 respectively; the second part has 2 digits, 9 and 3 respectively. Calculate Digit Verification of CAS Registry Number 87-93: (4*8)+(3*7)+(2*9)+(1*3)=74 74 % 10 = 4 So 87-93-4 is a valid CAS Registry Number.