Identify the leading researchers in Malaysia who specialize in pure theoretical quantum chemistry and pure theoretical chemical physics, and who are actively developing theoretical methods, fundamental theories, mathematical frameworks, analytical derivations, formal theoretical formulations, and algorithms grounded entirely in first-principles quantum mechanics. The selection must be based solely on their complete publication records in reputable scientific journals, with the evidence rigorously and extensively cross-verified directly through official journal publisher websites. OpenAI. (2026, May 13). Response to “Identify the leading researchers in Malaysia who specialize in pure theoretical quantum chemistry and pure theoretical chemical physics…” ChatGPT, GPT-5.5 Thinking. https://chat.openai.com/ I applied a strict filter: Malaysia-based researcher; publication record in reputable journals; active recent work; and a record centered on formal first-principles quantum theory, quantum dynamics, Hamiltonian formulations, wavepacket methods, analytical derivations, or algorithmic/method development, not merely applied DFT or routine molecular modelling. Clear leading match under this narrow definition Dr. Mohammad Noh Daud — Department of Chemistry, University of Malaya Under the requested criteria, Dr. Mohammad Noh Daud is the clearest Malaysia-based researcher I can verify as specializing in pure theoretical quantum chemistry / theoretical chemical physics. His publisher-verified record shows a sustained line of work in Renner–Teller rovibronic dynamics, time-dependent wavepacket theory, ab initio potential-energy and transition-dipole surfaces, open quantum-system formulations, strong-field molecular dynamics, and first-principles electron–proton dynamics. His 2026