Shanghai Nianxing Industrial Co., Ltd
China
Product Name: 4,5-Dimethyl-phthalic acid anhydride
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 1,3-Isobenzofurandione,5,6-dimethyl-
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

5999-20-2

5999-20-2 structure

Name: 1,3-Isobenzofurandione,5,6-dimethyl-
Chemical Name: 5,6-Dimethyl-2-benzofuran-1,3-dione
CAS Number: 5999-20-2
Molecular Formula: C₁₀H₈O₃
Molecular Weight: 176.16900
Create Date: 2016-05-14 22:10:04
Modify Date: 2025-08-25 06:05:19

Name	5,6-Dimethyl-2-benzofuran-1,3-dione
Synonyms	4,5-Dimethyl-phthalsaeure-anhydrid 5,6-dimethylphthalic anhydride 5,6-Dimethyl-1,3-isobenzofurandione 4,5-dimethyl-phthalic acid anhydride 4,5-dimethylphthalic anhydride

Density	1.303g/cm3
Boiling Point	354.8ºC at 760 mmHg
Molecular Formula	C₁₀H₈O₃
Molecular Weight	176.16900
Flash Point	174.9ºC
Exact Mass	176.04700
PSA	43.37000
LogP	1.61400
Index of Refraction	1.585

5438-24-4

~68%

5999-20-2

Literature: Hennige, Hans; Kreher, Richard P.; Konrad, Michael; Jelitto, Frank Chemische Berichte, 1988 , vol. 121, p. 243 - 252

513-81-5

5999-20-2

Literature: Perrin, Charles L.; Lau, Jonathan S. Journal of the American Chemical Society, 2006 , vol. 128, # 36 p. 11820 - 11824

13303-36-1

5999-20-2

Literature: Stapleton; White Journal of the American Pharmaceutical Association (1912-1977), 1954 , vol. 43, p. 193,199 Full Text Show Details Sugasawa; Sugimoto Yakugaku Zasshi, 1941 , vol. 61, p. 62,67; engl. Ref. S. 26, 29 Chem. Zentralbl., 1941 , vol. 112, # II p. 1277

5680-10-4

5999-20-2

Literature: Coffey Recueil des Travaux Chimiques des Pays-Bas, 1923 , vol. 42, p. 434,1030

Precursor 4
5438-24-4 513-81-5 13303-36-1 5680-10-4
DownStream 10
110568-65-5 85-44-9 19438-61-0 4792-30-7
89-32-7 89-05-4 3056-98-2 136559-93-8
66653-94-9 870171-40-7

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5999-20-2	23893-84-7
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1019579-89-5	1019555-37-3
1019555-45-3	1019555-70-4
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