dalton

https://doi.org/10.1351/goldbook.D01514
Non-SI unit of mass (symbol \(\mathrm{Da}\)), equal to the @U06554@ (@A00497@). It is often used in biochemistry and molecular biology although it was never approved by the Conférence Général des Poids et Mesures.
Sources:
Green Book, 2nd ed., p. 111 [Terms] [Book]
PAC, 1996, 68, 957. (Glossary of terms in quantities and units in Clinical Chemistry (IUPAC-IFCC Recommendations 1996)) on page 968 [Terms] [Paper]