3-Methyltetrahydrophthalic anhydride (3-MTHPA) is an organic compound with the molecular formula C9H10O3. It is a colorless to pale yellow solid, often used as an intermediate in the production of various chemicals, including polyamides, polyesters, and other polymers. 3-MTHPA is synthesized through the cyclodehydration of 3-methylsuccinic acid or by the Diels-Alder reaction of cyclopentadiene with maleic anhydride. This versatile chemical is known for its stability and reactivity, making it a valuable component in the synthesis of specialty polymers and other chemical products.

23939-62-0

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Basic information
1. Product Name: 3-methyltetrahydrophthalic anhydride
2. Synonyms:
3. CAS NO:23939-62-0
4. Molecular Formula:
5. Molecular Weight: 166.177
6. EINECS: N/A
7. Product Categories: N/A
Chemical Properties
1. Melting Point: N/A
2. Boiling Point: N/A
3. Flash Point: N/A
4. Appearance: N/A
5. Density: N/A
6. Refractive Index: N/A
7. Storage Temp.: N/A
8. Solubility: N/A
9. CAS DataBase Reference: 3-methyltetrahydrophthalic anhydride(CAS DataBase Reference)
10. NIST Chemistry Reference: 3-methyltetrahydrophthalic anhydride(23939-62-0)
11. EPA Substance Registry System: 3-methyltetrahydrophthalic anhydride(23939-62-0)
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: 23939-62-0(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 23939-62-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,9,3 and 9 respectively; the second part has 2 digits, 6 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 23939-62:
(7*2)+(6*3)+(5*9)+(4*3)+(3*9)+(2*6)+(1*2)=130
130 % 10 = 0
So 23939-62-0 is a valid CAS Registry Number.

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