If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
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PHR1963
(+)-Catechin
Pharmaceutical Secondary Standard; Certified Reference Material
Synonim(y):
(+)-Catechin, (+)-Cyanidanol, D-Catechin
Wybierz wielkość
| Do Państwa/SKU | Dostępność | Cena netto |
|---|---|---|
50 mg | Skontaktuj się z Obsługą Klienta, aby uzyskać informacje na temat dostępności | 1500,00 zł 1275,00 zł |
Informacje o tej pozycji
1275,00 zł
Cena katalogowa1500,00 złZaoszczędź 15%Quality Segment
grade
certified reference material, pharmaceutical secondary standard
agency
traceable to USP 1096790
API family
catechins
CofA
current certificate can be downloaded
packaging
pkg of 50 mg
application(s)
pharmaceutical
format
neat
storage temp.
2-8°C
SMILES string
O[C@H]1Cc2c(O)cc(O)cc2O[C@@H]1c3ccc(O)c(O)c3
InChI
1S/C15H14O6/c16-8-4-11(18)9-6-13(20)15(21-14(9)5-8)7-1-2-10(17)12(19)3-7/h1-5,13,15-20H,6H2/t13-,15+/m0/s1
InChI key
PFTAWBLQPZVEMU-DZGCQCFKSA-N
General description
Pharmaceutical secondary standards for application in quality control provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.
(+)-Catechin is a flavan-3-ol, that belongs to the family of polyphenolic flavonoids, called catechins. Found in green tea, it shows many health benefits, such as anti-oxidant, anti-inflammatory, anti-proliferative, and anti-platelet activity.
Application
- Development of an ultra-high performance liquid chromatography-triple-quadrupole tandem mass spectrometry (UHPLC-MS-MS) method for the simultaneous determination of eight catechins and four theaflavins in three types of tea samples
- Separation and estimation of six tea catechins and caffeine by an UHPLC method coupled to a UV detector from green tea samples
- Simultaneous analysis of five naturally occurring catechins by an isocratic HPLC method
- Infrared-assisted extraction (IRAE) followed by HPLC separation and quantification of catechin, epicatechin, and procyanidin B2 in grape seed samples
- Analysis of caffeine and catechins from green tea leaves by pressurized liquid extraction (PLE) using ethyl lactate, water, and ethyl lactate + water mixtures
Analysis Note
Other Notes
1 of 1
Ta pozycja | |||
|---|---|---|---|
| description Pharmaceutical Secondary Standard; Certified Reference Material | description analytical standard | description phyproof® Reference Substance | description United States Pharmacopeia (USP) Reference Standard |
| application(s) pharmaceutical | application(s) food and beverages | application(s) food and beverages | application(s) pharmaceutical (small molecule) |
| format neat | format neat | format neat | format neat |
| Quality Level 300 | Quality Level 100 | Quality Level - | Quality Level - |
| grade certified reference material, pharmaceutical secondary standard | grade analytical standard | grade primary reference standard | grade pharmaceutical primary standard |
| storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C | storage temp. 2-8°C |
| packaging pkg of 50 mg | packaging - | packaging - | packaging - |
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signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
target_organs
Respiratory system
Klasa składowania
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
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How can I determine the shelf life / expiration / retest date of this product?
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Is it soluble in water?
1 answer-
The solubility of this product has not been determined in water. However, external sources report that this material is slightly soluble in water at 1.8 mg/mL. Heating or sonication may be required. Note that the hydrate form, available as product C1251, is soluble in ethanol at 50 mg/mL. A similar rate would be expected for this material.
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How is shipping temperature determined? And how is it related to the product storage temperature?
1 answer-
Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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