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Merck
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主要文件

8.22029

Sigma-Aldrich

3,4-Dihydroxycinnamic acid

for synthesis

别名:

3,4-Dihydroxycinnamic acid, Caffeic acid

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About This Item

线性分子式:
(OH)2C6H3CHCHCOOH
CAS号:
331-39-5
分子量:
180.16
MDL编号:
MFCD00004392
UNSPSC代码:
12352106
EC索引号:
206-361-2
NACRES:
NA.22
价格与库存信息目前不能提供

质量水平

200

方案

≥98.0% (HPLC)

表单

powder

mp

234-237 °C (decomposition)

储存温度

2-30°C

SMILES字符串

Oc1c(ccc(c1)\C=C/C(=O)O)O

InChI

1S/C9H8O4/c10-7-3-1-6(5-8(7)11)2-4-9(12)13/h1-5,10-11H,(H,12,13)/b4-2-

InChI key

QAIPRVGONGVQAS-RQOWECAXSA-N

分析说明

Assay (HPLC, area%): ≥ 98.0 % (a/a)
Identity (IR): passes test

象形图

Health hazard
GHS08

警示用语：

Warning

危险声明

H351

危险分类

Carc. 2

储存分类代码

11 - Combustible Solids

WGK

WGK 3

闪点(°F)

Not applicable

闪点(°C)

Not applicable

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Questions

  1. Why are the melting points of caffeic acid 8220290010 (listed as 3,4-dihydroxycinnamic acid) and caffeic acid C0625 so different? They are both listed as >98% (HPLC).

    1 answer

    1. The determination of melting point largely depends on testing conditions, such as equipment type, the rate of temperature increase, the diameter of the glass tube, etc. These products are not tested for melting point. These products are from different brands and melting point values are taken from different literature sources.

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