3,5-Dimethoxyphthalic anhydride
4,6-二甲氧基-1,3-异苯并呋喃二酮
Also known as: 3,5-DIMETHOXY-PHTHALIC ANHYDRIDE, 1,3-Isobenzofurandione, 4,6-dimethoxy-, 4,6-Dimethoxyisobenzofuran-1,3-dione, 4,6-Dimethoxy-2-benzofuran-1,3-dione, 3,5-Dimethoxy-phthalic acid anhydride, Phthalic anhydride, 3,5-dimethoxy- (6CI,7CI,8CI), 3,5-Dimethoxy-phthalsaeureanhydrid
3,5-Dimethoxyphthalic anhydride (CAS 4670-17-1) is a compound in the Pharma Intermediates category listed in the Jingsj chemical database. It has the molecular formula C10H8O5 and a molecular weight of 208.16800 g/mol. It is also known as 3,5-DIMETHOXY-PHTHALIC ANHYDRIDE, 1,3-Isobenzofurandione, 4,6-dimethoxy- and 4,6-Dimethoxyisobenzofuran-1,3-dione. Key properties include a boiling point of 403.9ºC at 760 mmHg, a density of 1.382 and a flash point of 184.9ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.
- CAS No.
- 4670-17-1
- Jingsj CID
- J-1507917-0
- Molecular Formula
- C10H8O5
- Chinese Name
- 4,6-二甲氧基-1,3-异苯并呋喃二酮
- Molecular Weight
- 208.16800 g/mol
- Category
- Pharma Intermediates
- Last updated
- 8/21/2026
No offers for this compound yet.
Request a quotePhysicochemical Properties
| Boiling Point | 403.9ºC at 760 mmHg |
|---|---|
| Density | 1.382 |
| Flash Point | 184.9ºC |
Frequently Asked Questions
What is the CAS number of 3,5-Dimethoxyphthalic anhydride?
The CAS number of 3,5-Dimethoxyphthalic anhydride is 4670-17-1.
What are the molecular formula and molecular weight of 3,5-Dimethoxyphthalic anhydride?
3,5-Dimethoxyphthalic anhydride has molecular formula C10H8O5 and molecular weight 208.16800 g/mol.
Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.
Last updated:
How to cite: Jingsj. "3,5-Dimethoxyphthalic anhydride (CAS 4670-17-1)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1507917-0 (accessed 2026-10-24).
Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.