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  4. Nitrous acid ( HNO 2) converts amino acids into hydroxyl acids with retention of configuration. Estimation of nitrogen gas evolved in the reaction is the basis of Van Slyke estimation of amino acids. <img class=img-fluid question-image alt=image src=https://cdn.tardigrade.in/img/question/chemistry/2c5fc2459fa6036400a571ff091d8b0f-.png /> Which of the following amino acids cannot be analysed by Van slyke method?

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Q. Nitrous acid $\left( HNO _{2}\right)$ converts amino acids into hydroxyl acids with retention of configuration. Estimation of nitrogen gas evolved in the reaction is the basis of Van Slyke estimation of amino acids.
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Which of the following amino acids cannot be analysed by Van slyke method?Chemistry Question Image

Biomolecules

Solution:

Correct answer is (b) only II