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
210145
2,2-Dimethyl-1,3-dioxane-4,6-dione
98%
Synonyma:
Malonic acid cyclic isopropylidene ester, Meldrum’s acid, cycl-Isopropylidene malonate
Vybrat velikost
| Vám/Skladová položka | Dostupnost | Cena |
|---|---|---|
10 g | Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti. | 1 410,00 Kč |
25 g | Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti. | 1 870,00 Kč |
100 g | Obraťte se na zákaznický servis a vyžádejte si informaci o dostupnosti. | 4 040,00 Kč |
O této položce
1 410,00 Kč
Quality Segment
assay
98%
form
solid
mp
92-96 °C (lit.)
solubility
dioxane: soluble 5%, clear to very slightly hazy, colorless to faintly yellow
functional group
ester, ketal
storage temp.
2-8°C
SMILES string
CC1(C)OC(=O)CC(=O)O1
InChI
1S/C6H8O4/c1-6(2)9-4(7)3-5(8)10-6/h3H2,1-2H3
InChI key
GXHFUVWIGNLZSC-UHFFFAOYSA-N
General description
Meldrum′s acid is used as a valuable starting material to synthesize heterocycles and as intermediates in organic synthesis reactions.
Application
- macrocyclic β-keto lactone
- 4-pyridyl-substituted heterocycles
- 2-substituted indoles
- isofraxidin.
1 of 1
Tato položka | |||
|---|---|---|---|
| description 98% | description 98% | description 97% | description 98% |
| assay 98% | assay 98% | assay 97% | assay 98% |
| solubility dioxane: soluble 5%, clear to very slightly hazy, colorless to faintly yellow | solubility alcohol: miscible, diethyl ether: miscible, oil: miscible, water: slightly soluble | solubility - | solubility - |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 200 |
| mp 92-96 °C (lit.) | mp −62 °C (lit.) | mp 111-114 °C (lit.) | mp - |
| storage temp. 2-8°C | storage temp. - | storage temp. - | storage temp. - |
| form solid | form liquid | form solid | form liquid |
Skladovací třída
11 - Combustible Solids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
Vyberte jednu z posledních verzí:
Již tento produkt vlastníte?
Dokumenty související s produkty, které jste v minulosti zakoupili, byly za účelem usnadnění shromážděny ve vaší Knihovně dokumentů.
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
Helpful?
-
-
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
Helpful?
-