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14965-08-3

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14965-08-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 14965-08-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,4,9,6 and 5 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 14965-08:
(7*1)+(6*4)+(5*9)+(4*6)+(3*5)+(2*0)+(1*8)=123
123 % 10 = 3
So 14965-08-3 is a valid CAS Registry Number.

14965-08-3SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name 5,7-dihydroxy-2-(4-hydroxy-3-methoxyphenyl)-3,8-dimethoxychromen-4-one

1.2 Other means of identification

Product number -
Other names Gossypetin 3,8,3'-trimethyl ether

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:14965-08-3 SDS

14965-08-3Relevant articles and documents

Studies of the Selective O-Alkylation and Dealkylation of Flavonoids. 10. Selective Demethylation of 7-Hydroxy-3,5,8-trimethoxyflavones with Anhydrous Aluminum Halide in Acetonitrile or Ether

Horie, Tokunaru,Tsukayama, Masao,Kawamura, Yasuhiko,Seno, Masamichi

, p. 4702 - 4709 (2007/10/02)

Demethylation of five 7-hydroxy-3,5,8-trimethoxyflavones and their acetates with anhydrous aluminum halides in acetonitrile or ether was studied and the following results were found. (1) The demethylation was apparently influenced by both solvents and afforded 5,7-dihydroxy-3,8-dimethoxyflavones in acetonitrile and 3,7-dihydroxy-5,8-dimethoxyflavones in ether as main products. (2) The demethylation with 5percent w/v anhydrous aluminum bromide in acetonitrile procedeed quantitatively to give a mixture of corresponding 5- and 3-hydroxyflavones, but that of 7-hydroxy-3,4',5,8-tetramethoxyflavone and its acetate with 10percent anhydrous aluminum chloride in acetonitrile afforded 6-acetyl-5,7-dihydroxy-3,4,8-trimethoxyflavone as a byproduct along with the 5- and 3-hydroxyflavones. (3) The demethylation of the acetates proceeded more smoothly than that of hydroxyflavones and was superior to that of the flavones with a hydroxy group. (4) These demethylations are available for the syntheses of 3- or 5-hydroxyflavones with no substituent at 6-position.

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