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
I2752
L-Isoleucine
≥98% (HPLC)
Synonym(s):
(2S,3S)-2-Amino-3-methylpentanoic acid
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About This Item
Product Name
L-Isoleucine, reagent grade, ≥98% (HPLC)
grade
reagent grade
Quality Segment
assay
≥98% (HPLC)
form
powder
color
white
mp
288 °C (dec.) (lit.)
solubility
1 M NH4OH: 50 mg/mL
application(s)
detection
SMILES string
CC[C@H](C)[C@H](N)C(O)=O
InChI
1S/C6H13NO2/c1-3-4(2)5(7)6(8)9/h4-5H,3,7H2,1-2H3,(H,8,9)/t4-,5-/m0/s1
InChI key
AGPKZVBTJJNPAG-WHFBIAKZSA-N
Application
Biochem/physiol Actions
1 of 1
This Item | |||
|---|---|---|---|
| grade reagent grade | grade - | grade certified reference material, TraceCERT® | grade - |
| form powder | form powder | form - | form powder or crystals |
| assay ≥98% (HPLC) | assay 98.5-101.0% | assay - | assay ≥99.5% (NT), ≥99.5% (TLC) |
| mp 288 °C (dec.) (lit.) | mp 288 °C (dec.) (lit.) | mp 288 °C (dec.) (lit.) | mp 288 °C (dec.) (lit.) |
| solubility 1 M NH4OH: 50 mg/mL | solubility 1 M HCl: 50 mg/mL | solubility - | solubility 1 M HCl: 1 M at 20 °C, clear, colorless |
| Quality Level 200 | Quality Level 300 | Quality Level 300 | Quality Level 100 |
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Storage Class
11 - Combustible Solids
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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How can I determine the shelf life / expiration / retest date of this product?
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Helpful?
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Buongiorno, Quanto azoto alfa-aminico contiene 1 gr di questo articolo? grazie, oppure, come lo calcolo?
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The nitrogen content is between 10.4% and 11.0% when determined by elemental analysis. To calculate the alpha-amino nitrogen in 1g of this product, multiply the nitrogen percentage by the weight of the sample. For example, for 10.4%, the calculation would be 1g x 0.104 = 0.104g of alpha-amino nitrogen.
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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
Helpful?
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Is Leucine light-sensitive?
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According to literature data, L Isoleucine has not been reported to be sensitive to light. A relevant publication for reference is EFSA Journal 2010; 8(1):1425. It states that "L-isoleucine is known to be not particularly sensitive to light.
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