4-Chloroindole-3-acetic acid (4-Cl-IAA) is a natural plant hormone. It is a member of the class of compounds known as auxins and a chlorinated derivative of the more common auxin indole-3-acetic acid (IAA). 4-Cl-IAA is found in the seeds of a variety of plants, particularly legumes such as peas and broad beans. It is hypothesized that 4-Cl-IAA may be a \"death hormone\" that maturing seeds use to trigger death of the parent plant by mobilizing nutrients to be stored in the seed.

CAS：2519-61-1
中文别名：4-氯吲哚乙酸;4-氯-3-吲哚乙酸;
英文别名：4-Cl-Iaa;4-chloro-3-indolylacetic acid;4-Chloroindole-3-acetic acid;4-Chloroindole-3-acetate;2-(4-chloro-1H-indol-3-yl)acetic acid;
分子式：C10H8ClNO2
分子量：209.629
精确质量：209.024
Psa：53.09
Logp：2.4484

密度：1.483 g/cm3
沸点：445.6ºC at 760mmHg
闪点：223.3ºC
折射率：1.698
储存条件：-20ºC
蒸汽压：1.01E-08mmHg at 25°C

安全说明：S16; S26; S36
危险类别码：R36/37/38
海关编码：2933990090
危险品标志：Xi