Kitajima A, Tagashira Y, Maekawa K, Yoshii K, Komatsu H, Tanimoto T, Okada S
Kokuritsu Iyakuhin Shokuhin Eisei Kenkyusho Hokoku. 1997(115):190-2.
The raw material of dl-camphor was examined for the preparation of the "dl-Camphor Reference Standard (Control 961)" of National Institute of Health Sciences. Analytical data obtained are as follows: UV spectrum, lambda max = 290 nm; IR spectrum, the same as that of the present JP Camphor Reference Standard (Control 953); melting point, 179.1 degrees C; purity test by gas-chromatography (GC), three kinds of impurities were detected; assay by GC, 99.8%. Based on the above results, the candidate raw material was authorized as the dl-Camphor Reference standard (Control 961) National Institute of Health Sciences (Japanese Pharmacopoeia).
对用于制备国立卫生科学研究所“外消旋樟脑对照品（对照961）”的外消旋樟脑原料进行了检验。获得的分析数据如下：紫外光谱，最大吸收波长λmax = 290 nm；红外光谱，与现行日本药局方樟脑对照品（对照953）相同；熔点，179.1℃；气相色谱法（GC）纯度检测，检测到三种杂质；GC含量测定，99.8%。基于上述结果，该候选原料被批准为国立卫生科学研究所（日本药典）的外消旋樟脑对照品（对照961）。
