2-Methyl-2,4,6,8-decatetrene-1,8,9-tricarboxylic 8,9-anhydride is a complex organic compound with the molecular formula C13H16O5. It is characterized by a decatetrene backbone, which consists of ten carbon atoms with alternating double bonds, and a methyl group attached to the second carbon. The compound features three carboxylic acid groups at the first, eighth, and ninth positions, with the eighth and ninth carboxylic acid groups forming an anhydride bridge, which is a cyclic ester derived from two carboxylic acids. This anhydride structure contributes to the compound's reactivity and potential applications in various chemical processes, such as polymerization and the synthesis of other complex molecules. The compound's unique structure and properties make it a subject of interest in organic chemistry and materials science.

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Basic information
1. Product Name: 2-Methyl-2,4,6,8-decatetrene-1,8,9-tricarboxylic 8,9-anhydride
2. Synonyms: 2-Methyl-2,4,6,8-decatetrene-1,8,9-tricarboxylic 8,9-anhydride;Itaconitin
3. CAS NO:842-39-7
4. Molecular Formula: C14H14O5
5. Molecular Weight: 262.25796
6. EINECS: N/A
7. Product Categories: N/A
8. Mol File: 842-39-7.mol
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: /
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 2-Methyl-2,4,6,8-decatetrene-1,8,9-tricarboxylic 8,9-anhydride(CAS DataBase Reference)
10. NIST Chemistry Reference: 2-Methyl-2,4,6,8-decatetrene-1,8,9-tricarboxylic 8,9-anhydride(842-39-7)
11. EPA Substance Registry System: 2-Methyl-2,4,6,8-decatetrene-1,8,9-tricarboxylic 8,9-anhydride(842-39-7)
Safety Data
1. Hazard Codes: N/A
2. Statements: N/A
3. Safety Statements: N/A
4. WGK Germany:
5. RTECS:
6. HazardClass: N/A
7. PackingGroup: N/A
8. Hazardous Substances Data: 842-39-7(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 842-39-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 8,4 and 2 respectively; the second part has 2 digits, 3 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 842-39:
(5*8)+(4*4)+(3*2)+(2*3)+(1*9)=77
77 % 10 = 7
So 842-39-7 is a valid CAS Registry Number.

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