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
93829
L-Tyrosine
≥99.0% (NT), suitable for ligand binding assays, BioUltra
Synonym(s):
(S)-2-Amino-3-(4-hydroxyphenyl)propionic acid, 3-(4-Hydroxyphenyl)-L-alanine
Select a Size
| Size/SKU | Availability | Price |
|---|---|---|
25 g | Please contact Customer Service for Availability | PLN 396.00 |
100 g | Please contact Customer Service for Availability | PLN 1,260.00 |
About This Item
Product Name
L-Tyrosine, BioUltra, ≥99.0% (NT)
product line
BioUltra
Quality Segment
assay
≥99.0% (NT)
form
powder or crystals
optical activity
[α]20/D −11.5±1.0°, c = 4% in 1 M HCl
technique(s)
ligand binding assay: suitable
impurities
insoluble matter, passes filter test, ≤0.5% foreign amino acids
ign. residue
≤0.1%
loss
≤0.2% loss on drying, 20 °C (HV)
color
white
mp
>300 °C (dec.) (lit.)
solubility
1 M HCl: 25 mg/mL, clear, colorless (hot)
anion traces
chloride (Cl-): ≤400 mg/kg, sulfate (SO42-): ≤300 mg/kg
cation traces
Al: ≤5 mg/kg, As: ≤0.1 mg/kg, Ba: ≤5 mg/kg, Bi: ≤5 mg/kg, Ca: ≤10 mg/kg, Cd: ≤5 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤5 mg/kg, Fe: ≤5 mg/kg, K: ≤50 mg/kg, Li: ≤5 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Mo: ≤5 mg/kg, NH4+: ≤200 mg/kg, Na: ≤200 mg/kg, Ni: ≤5 mg/kg, Pb: ≤5 mg/kg, Sr: ≤5 mg/kg, Zn: ≤5 mg/kg
absorption
cut-off at 310 nm in 1 M HCl at 0.5 M
SMILES string
N[C@@H](Cc1ccc(O)cc1)C(O)=O
InChI
1S/C9H11NO3/c10-8(9(12)13)5-6-1-3-7(11)4-2-6/h1-4,8,11H,5,10H2,(H,12,13)/t8-/m0/s1
InChI key
OUYCCCASQSFEME-QMMMGPOBSA-N
Application
Other Notes
1 of 1
This Item | |||
|---|---|---|---|
| form powder or crystals | form powder | form powder | form - |
| technique(s) ligand binding assay: suitable | technique(s) cell culture | mammalian: suitable | technique(s) - | technique(s) HPLC: suitable, gas chromatography (GC): suitable |
| assay ≥99.0% (NT) | assay 99.0-101.0% | assay ≥98% (HPLC) | assay - |
| product line BioUltra | product line BioXtra | product line - | product line TraceCERT® |
| optical activity [α]20/D −11.5±1.0°, c = 4% in 1 M HCl | optical activity [α]25/D 11.2 to 9.8°, c = 5 in 1 M HCl (Specific Rotation 6.1 - 7.8 °) | optical activity - | optical activity - |
| cation traces Al: ≤5 mg/kg, Ba: ≤5 mg/kg, Ca: ≤10 mg/kg, Co: ≤5 mg/kg, Cu: ≤5 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mo: ≤5 mg/kg, Na: ≤200 mg/kg, Pb: ≤5 mg/kg, Zn: ≤5 mg/kg, As: ≤0.1 mg/kg, Cd: ≤5 mg/kg, Fe: ≤5 mg/kg, Mn: ≤5 mg/kg, Ni: ≤5 mg/kg, Bi: ≤5 mg/kg, Li: ≤5 mg/kg, Sr: ≤5 mg/kg, Cr: ≤5 mg/kg, NH4+: ≤200 mg/kg | cation traces Fe: ≤10 ppm, NH4+: ≤0.02% | cation traces - | cation traces - |
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Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
dust mask type N95 (US), Eyeshields, Gloves
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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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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Hi, is the recommended retest date based on established stability?
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Product retest dating is based upon review of the product history or that of a comparable product. Please see the link below to review the Product Dating Statement:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/178/822/product-dating-information-statement.pdf
The assigned quality level (MQ) for this product is 200. Product of this quality level do not qualify for shelf life defined by stability studies. Please see the link below for additional information regarding assigned quality levels:
https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/346/647/m-clarity-quality-attributes-fl12541en-ms.pdfHelpful?
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