Examlex
A compound with molecular formula C8H14O4 exhibits a triplet at 1.3 (I=6) ,a singlet at 2.6 (I=4) and a quartet at 4.2 (I=4) in its 1HNMR spectrum.Its IR spectrum shows a strong absorption band near 1740 cm-1.What is the structure for this compound?
Fossil Record
A chronological collection of life's remains in sedimentary rocks, allowing scientists to understand the evolution of life on Earth.
Duck-Billed Platypuses
A semi-aquatic mammal endemic to eastern Australia, including Tasmania, unique for its duck-bill, webbed feet, and egg-laying capability.
Mammals
Warm-blooded vertebrate animals with hair or fur, females producing milk for their young.
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