美国CIL标准品：
美国CIL稳定性同位素世界上第一个生产稳定性同位素(StableIsotope)标记化合物的生产商。20年来，CIL一直研究稳定性同位素与稳定性同位素标记化合物的开发、生产。主要标记性同位素有13C、12C、D、15N、18O和17O，目前已经拥有8000多种标记化合物。
提交稳定性同位素标记物质可以被质谱仪(MS)、气相色谱-质谱联用仪、液相色谱-质谱联用仪、毛细管气相色谱、核磁共振(NMR)等设备所探测、测量和监控。
CIL的产品均能应用于不同的领域，如物理、化学、生物医学、分析、诊断研究以及环境测试。
Cambridge Isotope Laboratories, Inc. (CIL) is the world's premier producer of stable isotope labeled compounds and the world leader in the field of isotope separations with an annual production capacity of 120 kilograms of Carbon-13 and annual production capacity of 250 kilograms of Oxygen-18. For more than 20 years, CIL has specialized in the development, production, and marketing of stable (non-radioactive) isotopes and chemical compounds labeled with stable isotopes. With an inventory of over 8000 products, CIL has the most complete product offering of stable isotope labeled compounds available.
CIL employs 130 people at its state-of-the-art 57,000 square foot Andover, Massachusetts production laboratories and its Xenia, Ohio isotope separation facility. CIL's chemists are experts in their fields, with extensive years of experience exclusively in the synthesis of stable isotope labeled compounds.