Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: 3,3'-ethylidenebis[4-hydroxy-2-benzopyrone]
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang

1821-16-5

1821-16-5 structure

1821-16-5 structure

Name: 3,3'-ethylidenebis[4-hydroxy-2-benzopyrone]
Chemical Name: 4-hydroxy-3-[1-(4-hydroxy-2-oxochromen-3-yl)ethyl]chromen-2-one
CAS Number: 1821-16-5
Molecular Formula: C₂₀H₁₄O₆
Molecular Weight: 350.32200
Create Date: 2016-10-21 20:29:02
Modify Date: 2024-01-02 11:35:15

Name	4-hydroxy-3-[1-(4-hydroxy-2-oxochromen-3-yl)ethyl]chromen-2-one
Synonyms	Methyl-dicumarol 4,4'-dihydroxy-3,3'-ethane-1,1-diyl-bis-chromen-2-one Ethylidene dicoumarol

Density	1.534g/cm3
Boiling Point	520.7ºC at 760 mmHg
Molecular Formula	C₂₀H₁₄O₆
Molecular Weight	350.32200
Flash Point	188.6ºC
Exact Mass	350.07900
PSA	100.88000
LogP	3.46240
Vapour Pressure	1.14E-11mmHg at 25°C
Index of Refraction	1.717

RIDADR	UN 2811
Packaging Group	III
Hazard Class	6.1(b)
HS Code	2932209090

1076-38-6 structure

1076-38-6

75-07-0 structure

75-07-0

~94%

1821-16-5 structure

1821-16-5

Literature: Khan, Khalid Mohammed; Iqbal, Sajid; Lodhi, Muhammad Arif; Maharvi, Ghulam Murtaza; Zia-Ullah; Choudhary, Muhammad Iqbal; Atta-ur-Rahman; Perveen, Shahnaz Bioorganic and Medicinal Chemistry, 2004 , vol. 12, # 8 p. 1963 - 1968

849585-22-4 structure

849585-22-4

1076-38-6 structure

1076-38-6

10025-87-3 structure

10025-87-3

79-34-5 structure

79-34-5

~%

Detail

Literature: Ziegler et al. Monatshefte fuer Chemie, 1956 , vol. 87, p. 439,445

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