Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Palmitic acid
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
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Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 2H-1-Benzopyran-2-one,7,8-bis(acetyloxy)-
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
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Email: enquiry@dycnchem.com

21784-71-4

21784-71-4 structure

21784-71-4 structure

Name: 2H-1-Benzopyran-2-one,7,8-bis(acetyloxy)-
Chemical Name: (8-acetyloxy-2-oxochromen-7-yl) acetate
CAS Number: 21784-71-4
Molecular Formula: C₁₃H₁₀O₆
Molecular Weight: 262.21500
Create Date: 2016-09-16 08:15:48
Modify Date: 2025-08-21 20:51:38

Name	(8-acetyloxy-2-oxochromen-7-yl) acetate
Synonyms	Diacetyl-daphnetin Daphnetindiacetat 7,8-diacetoxy-chromen-2-one 7,8-Diacetoxy-cumarin 7,8-diacetoxy-coumarin DAPHNETIN DIACETATE 7,8-diacetoxy-4-methylcoumarin

Density	1.363g/cm3
Boiling Point	445.7ºC at 760mmHg
Molecular Formula	C₁₃H₁₀O₆
Molecular Weight	262.21500
Flash Point	201.5ºC
Exact Mass	262.04800
PSA	82.81000
LogP	1.64360
Vapour Pressure	3.86E-08mmHg at 25°C
Index of Refraction	1.562

HS Code	2932209090

108-24-7 structure

108-24-7

~%

21784-71-4 structure

21784-71-4

Literature: Gattermann; Koebner Chemische Berichte, 1899 , vol. 32, p. 287

75-36-5 structure

75-36-5

~%

21784-71-4 structure

21784-71-4

Literature: Stuenkel Chemische Berichte, 1879 , vol. 12, p. 112

108-24-7 structure

108-24-7

486-35-1 structure

486-35-1

~%

21784-71-4 structure

21784-71-4

477770-79-9 structure

477770-79-9

Literature: Gandini Gazzetta Chimica Italiana, 1940 , vol. 70, p. 611,613

Precursor 3
108-24-7 75-36-5 486-35-1
DownStream 0

HS Code	2932209090
Summary	2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

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