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Shanghai Chunyuan Phytochemistry Co., Ltd

 
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1.    2,3,4,4'-Tetrahydroxybenzophenone

2,3,4,4'-Tetrahydroxybenzophenone

Description

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Synonyms: 4-(4-Hydroxybenzoyl)-1,2,3-trihydroxybenzene; 4-(4-Hydroxybenzoyl) pyrogallol
CAS No.: 31127-54-5
Molecular Weight: 246.219
Molecular Formula: C13H10O5

Specification
Item Standard
Appearance: Yellow powder;
Melt point: ...
2.    3, 4-Ethylenedioxythiophene

3, 4-Ethylenedioxythiophene

Description

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Molecular Formula: C6H6O2S
CAS: 126213-50-1

Main specification:
Appearance: Colorless or light yellow liquid
Boiling point: 140-144 Centigrade
Moisture: Not more than 0.2%
Content: More than 99%

Application: Monomer for the production ...
3.    Propyl gallate

Propyl gallate

Description

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Chemical name: Propyl-3,4,5-Trihydroxybenzoate
Mol. Form and Mol. Wt.: C10H12O5=212.21
CAS 121-79-9

Decription: A white to creamy-white crystalline powder; soluble in 1000 psrts of water, in 3 parts of ethanol, in 3 parts ether, and in ...
4.    Ellagic acid

 Ellagic acid

Description

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Registry number 476-66-4

1.Specifications:
Item: Standard
Appearance: Brownish or greyest powder
Ellagic acid content %: ≥90
Loss on drying %: ≤5
Ash content % ≤4:
Heavy metal (Pb)ppm: ≤10
Total bacterial count fu/g: ≤10 ...
5.    2,3,4-trihydroxy benzaldehyde

2,3,4-trihydroxy benzaldehyde

Description

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Molecular formula: C7H6O4
Molecular weight: 154.12
Registry number: 2144-08-3

Main specification:
Appearance: Yellowish crystalline power
Assay(HPLC): 99.5%Min
Melting point: 159162℃
Moisture: 0.5%Max
Sulphated ash: 0.1%Max
Clarity ...
6.    2,3,4-Trimethoxybenzaldehyde

2,3,4-Trimethoxybenzaldehyde

Description

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Molecular Formula: C10H12O4
Formula Weight: 196.20
Registry number: 2103-57-3

Main specifications:
Item:First-grade product
Appearance:Light yellow flakes or crystalline powder
Loss of drying, %:1
Content,%:99

Application: ...
7.    2,3,4-trihydroxybenzophenone

2,3,4-trihydroxybenzophenone

Description

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2,3,4-trihydroxybenzophenone
Synonyms: 4-benzoyl-1,2,3-trihydroxybenzene; 4-benzoylpyrogllol; 2,3,4-THBP

Application: ultraviolet light absorber. Intermediate of ultraviolet positive photoresist in IC industry and cosmetic.
Molecular Formula: ...
8.    tannic acid

tannic acid

Description

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Molecular formula and weight: C76H52O46=1701.18
Registry number: 1401-55-4

We have the tannic acid products of four specifications as following:
(1)Tannic acid for medicine: Conforming USA Pharmacopoeia of 1990 edition.

Property: Light ...
9.    Pyrogallol acid

Pyrogallol acid

Description

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Synonym: pyrogallic acid
Chemical name: 1,2,3-trihydroxybenzene
Molecular formula and weight: C6H6O3=126.11
Description: White lustrous crystalline powder, soluble in 2 parts of water, 1 part of ethanol and 2 parts of ethyl ether.
Specification: ...
10.    1,2,3-trimethoxy benzene

1,2,3-trimethoxy benzene

Description

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Molecular formula and weight: C9H12O3 =168.19
Registry number: 634-36-6

Main specifications:
Melting point℃:158~162
Content(dry weight), %≥:98.0
Water,%≤:10.0

Application: Mainly used as pharmaceutical intermediates of ...

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