What Is Emodin?

Emodin is an orange-yellow long needle-like crystal. It crystallizes into orange in acetone and yellow in methanol. It has a melting point of 256 ° C to 257 ° C. It has a special reaction with anthraquinone. It is almost insoluble in water and soluble in ethanol and alkaline solutions. . ^[1]

Drug Name: Emodin

CAS number: 518-82-1

MDL number: MFCD00001207

EINECS number: 208-258-8

RTECS number: CB7920600

BRN number: 1888141

PubChem number: ^[3]

[Density]:	1.6 ± 0.1 g / cm3
[Boiling point]:	586.9 ± 39.0 ° C at 760 mmHg
[Melting point]:	255 ° C (dec.) (Lit.)
[Molecular formula]:	C15H10O5
[Molecular weight]:	270.237
[ Flash point]:	322.8 ± 23.6 ° C
[Exact mass]:	270.052826
[PSA]:	94.83000
[LogP]:	5.03
[Appearance]:	Red-orange powder
[Vapor pressure]:	0.0 ± 1.7 mmHg at 25 ° C
[Refractive index]:	1.745

^[2]

1. Acute toxicity: LD50 in mice via abdominal cavity: 35mg / kg, causing gastrointestinal and other changes;

2. Mutagenicity data: TEST system mutations in microorganisms: bacteria-Salmonella typhimurium: 50ug / plate;

Microbial TEST system mutation: bacteria-Salmonella typhimurium: 2ug / plate;

Non-programmed DNA synthesisTEST system: rodent-rat liver: 10mg / L;

Micro testTEST system: rodent-mouse lymphocyte: 60umol / L;

Morphological transformationTEST system: rodent-mouse fibroblasts: 3mg / L;

Mutant cellsTEST system in mammalian somatic cells: rodent-mouse mammary glands: 5mg / L;

Mutant cellsTEST system in mammalian somatic cells: rodent-mouse lymphocytes: 55500 nmol / L;

Micro testTEST system: rodent-hamster embryo: 13750 ug / L;

Sister chromatid exchangeTEST system: rodent-hamster ovary: 5mg / L;

Mutant cellsTEST system in mammalian somatic cells: rodent-hamster lung: 10mg / L; ^[3]

This substance may be harmful to the environment. Special attention should be given to water bodies. ^[3]

1. Molar refractive index: 69.13

2. Molar volume (m3 / mol): 170.6

3. Isometric Zhang Rong (90.2K): 518.7

4. Surface tension (dyne / cm): 85.4

5. Polarizability (10-24cm3): 27.40 ^[3]

1. Reference value for calculation of hydrophobic parameters (XlogP): 2.7

2. Number of hydrogen-bonded donors: 3

3. Number of hydrogen bond acceptors: 5

4. Number of rotatable chemical bonds: 0

5. Number of tautomers: 135

6. Topological molecular polar surface area (TPSA): 94.8

7. Number of heavy atoms: 20

8. Surface charge: 0

9. Complexity: 434

10. Number of isotope atoms: 0

11. Determine the number of atomic stereocenters: 0

12. Uncertain number of atomic stereocenters: 0

13. Determine the number of chemical bond stereocenters: 0

14. Uncertain number of chemical bond stereocenters: 0

15. Number of covalent bond units: 1 ^[3]

1. After contact with eyes, rinse immediately with plenty of water and seek medical advice.

2. Wear appropriate gloves and goggles or a mask. ^[3]

Irritation of eyes, respiratory system and skin. ^[3]

Antitumor activity

Emodin on mouse solid sarcoma S-180, mouse liver cancer,

Rats were administrated with 14C-emodin at a dose of 50mh / kg. The excretion in urine within 24 hours was 18% of the administered dose and 22% within 72 hours. Excreted in urine

Oral emodin is easily absorbed in the intestine, and reaches the highest concentration in blood after 2 to 3 hours, and then gradually declines. Urine and bile reach a peak in 4 to 8 hours after taking the drug. Excretion can continue for 2 days in the body. The distribution of liver and kidney is the most. It is also made into injections for muscle and

Emodin has laxative activity. Because it is easily oxidized in the body, the actual laxative effect is very weak. If it is combined with sugar to form glycosides, it can play a laxative effect. In addition to free emodin, emodin is also present in a reduced state (such as anthracenol, anthracene derivatives) or combined with sugars to form glycosides. For example, emodin anthraphenol or emodin anthrone (melting point 250-258 ° C) found in fresh plants are reduced products of emodin. If stored for a long time, they are often oxidized to anthraquinones. The melting point of emodin-1-O--D-glucoside is 189-190 ° C; the melting point of emodin-8-O--D-glucoside is 239-241 ° C, both of which are emodin and glucose Bound glycosides are also present in the rhubarb. The former is also one of the active ingredients with antibacterial effect in Polygonum cuspidatum.

Emodin is also used in feed (fish, shrimp). As long as it is used as an attractant, it can increase the fish and shrimp eating rate to promote growth.