Arrange the following milestones in the structural elucidation and synthesis of Penicillin in the correct chronological order (from earliest to latest): 1. Discovery of Penicillin by Alexander Fleming 2. Determination of the beta-lactam structure of Penicillin by Dorothy Hodgkin using X-ray crystallography 3. First total chemical synthesis of Penicillin V by John C. Sheehan 4. Introduction of Ampicillin, the first semi-synthetic broad-spectrum penicillin

Options:

• A: 2-1-3-4
• B: 1-3-2-4
• C: 1-2-4-3
• D: 1-2-3-4

Related Practice Questions:

• Let $S_1$ and $S_2$ be two disjoint, non-empty convex sets in $\mathbb{R}^n$. Under which of the following conditions is there guaranteed to exist a hyperplane that strictly separates $S_1$ and $S_2$?
• Let the primal linear programming problem be: Maximize $Z = c^T x$ subject to $Ax \le b, x \ge 0$. If this primal problem has an unbounded optimal objective value, then which of the following statements is always true regarding its dual problem?
• Let $S = \{(x, y) \in \mathbb{R}^2 \mid x^2 + y^2 \le 9\}$ be a convex set in $\mathbb{R}^2$. The set of all extreme points of $S$ is given by:
• In a linear programming problem with $3$ independent equality constraints and $5$ variables (including slack/surplus variables), what is the maximum possible number of basic solutions?