![Poly[(R)-3-hydroxybutyric acid] natural origin](/deepweb/assets/sigmaaldrich/product/structures/129/476/7d1c924b-f644-4889-a2d6-d7a923ce382c/640/7d1c924b-f644-4889-a2d6-d7a923ce382c.png)
This product is supplied as a white powder.
363502
Poly[(R)-3-hydroxybutyric acid]
natural origin
Synonym(s):
(R)-3-Hydroxybutyric acid polymerized, PHB
Sign In to View Organizational & Contract Pricing.
Select a Size
Change View
| Size/SKU | Availability | Price |
|---|---|---|
10 g | Check Cart for Availability | $203.00 |
100 g | Check Cart for Availability | $1,200.00 |
About This Item
Linear Formula:
[COCH2CH(CH3)O]n
CAS Number:
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12162002
MDL number:
$203.00
Check Cart for Availability
Subscriptions are currently unavailable.
Ships Every 4 weeks
Quality Segment
transition temp
Tm 172 °C (DSC)
SMILES string
CC(O)CC(O)=O
InChI
1S/C12H20O6/c1-8(14)6-11(15)18-10(3)7-12(16)17-9(2)4-5-13/h5,8-10,14H,4,6-7H2,1-3H3
InChI key
QLACRIKFZRFWRU-UHFFFAOYSA-N
General description
Biocompatible, biodegradable polymer.
Application
Poly[(R)-3-hydroxybutyric acid (PHB) is a biodegradable and biocompatible polymer produced by several bacterial species, owing to its low resorbability and tunable properties, it may find uses in a variety of applications such as tissue engineering, controlled release systems etc.
1 of 1
This Item | |
|---|---|
| description natural origin | description ≥98.5% (sum of enantiomers, GC) |
| Quality Level 200 | Quality Level 200 |
| transition temp Tm 172 °C (DSC) | transition temp - |
Storage Class
11 - Combustible Solids
WGK
WGK 3
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
Choose from one of the most recent versions:
Already Own This Product?
Find documentation for the products that you have recently purchased in the Document Library.
-
hello, does it come grinded to a powder ?
1 answer-
Helpful?
-
-
How can I determine the shelf life / expiration / retest date of this product?
1 answer-
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.pdfHelpful?
-
-
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?
-
-
What is the organism from which PHB is extracted?
1 answer-
This product is manufactured by fermentation of cell culture. The exact organism is considered proprietary.
Helpful?
-
-
Do you know what the solubility of PHB in chloroform is?
1 answer-
The solubility of this product in chloroform has not been tested. However, historical data suggests that 5 parts PHB powder can be mixed with 95 parts chloroform in an explosion-proof pressure tube, sealed, and heated for a few minutes at 90°C.
Helpful?
-
-
We are using PHB and a standard for our HPLC method. This involves conversion to crotonic acid in boiling sulfuric acid. However, once cooled, crystals are formed. Any advice in how to deal with this?
1 answer-
Both PHB and crotonic acid are prone to crystallization from aqueous solutions. It is likely that the concentration of one or more of these solutes exceeds the saturation point in the solvent being used.
Using a lower concentration of PHB (either less PHB or more solvent) may inhibit the formation of crystals. Crystals recovered from the solution by filtration can be resolubilized using water, and this process can be expedited using sonication.
Helpful?
-
-
What is the molecular weight of this polymer?
1 answer-
The molecular weight of this material is not tested on a lot-to-lot basis. However, historical information suggests a molecular weight of approximately 400-500 kDa.
Helpful?
-
-
Do you have data about the purity of this sample of PHB?
1 answer-
Unfortunately, this product is not tested for purity.
Helpful?
-