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(-)-Gallocatechin gallate

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начало: Китай

Кас Но: 4233-96-9

Спецификация: 99%наименьший

минимальный объем заказа: 1 /kg

снабженческая способность: 100 mt/month

опережающий период: OEM 7 дней, пятно 3 дня

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Характеристики продукции
Описание продукта

Quick Details
Type:
98% (-)-Gallocatechin gallate
Form:
Powder
Part:
98% (-)-Gallocatechin gallate
Extraction Type:
Solvent Extraction
Packaging:
bottle
Place of Origin:
Shaanxi, China
Grade:
Reference standard, Reference standard
Brand Name:
98% (-)-Gallocatechin gallate
Model Number:
98% (-)-Gallocatechin gallate
Product Name:
98% (-)-Gallocatechin gallate
Appearance:
Off-white Powder
Specification:
98% (-)-Gallocatechin gallate
CAS:
4233-96-9
Test Method:
HPLC MS
MOQ:
20mg
Storage:
Cool Dry Place
Extraction type:
Solvent Extraction
Shelf Life:
2 Years
Packaging&Delivery
Packaging Details
20mg/bottle
1g/bottle
Port
XIAN
Lead Time:
Quantity(Milligrams) 1 - 20 21 - 1000 >1000
Est. Time(days) 2 3 To be negotiated

Property

CAS No.: 4233-96-9 Formula: C22H18O11 Molecular Weight: 458.37200

Description

Gallocatechin gallate (GCG) is the ester of gallocatechin and gallic acid and a type of catechin. It is an epimer of epigallocatechin gallate (EGCG).
In a high temperature environment, an epimerization change is likely to occur, because heating results in the conversion from EGCG to GCG. According to the referenced study the resulting GCG (the epimer of EGCG) results in even lower dietary cholesterol absorption than occurs with EGCG. While this may be a beneficial outcome with respect to cholesterol reduction activity, for those wishing to maximize the EGCG content of green tea infusions, it is still appropriate to use high temperatures, as long as it is taking into account that extreme conditions will lead to small reductions in total EGCG, for example a 12.4% reduction in total EGCG when heated for 30 minutes straight at 100 degrees Celsius.

Basic Info

Chemical Name	(-)-Gallocatechin gallate
Synonyms	(−)-Gallocatechin gallate; [(2S,3R)-5,7-dihydroxy-2-(3,4,5-trihydroxyphenyl)-3,4-dihydro-2H-chromen-3-yl] 3,4,5-trihydroxybenzoate;
CAS No.	4233-96-9
Molecular Formula	C22H18O11
Molecular Weight	458.37200
PSA	197.37000
LogP	2.23320

Properties

Density	1.685 g/cm3
Boiling Point	920.9ºC at 760 mmHg
Flash Point	325.2ºC
Refractive Index	1.857
Storage Condition	2-8ºC

Safety Info

Safety Statements	S26-S36
Risk Statements	R36/37/38
Hazard Codes	Xi
Signal Word	Warning
Hazard Declaration	H302; H315; H319; H335
Symbol	GHS07
Caution Statement	P261; P305 + P351 + P338