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/449/386/product-dating-information-mk.pdf
R4500
(−)-Riboflavin
from Eremothecium ashbyii, ≥98%
Synonym(s):
Lactoflavin, Vitamin B2, Vitamin G
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About This Item
biological source
Eremothecium ashbyii
Quality Level
Assay
≥98%
form
powder
color
yellow to orange
mp
290 °C (dec.) (lit.)
storage temp.
room temp
SMILES string
CC1=C(C)C=C(N(C[C@H](O)[C@@H]([C@H](O)CO)O)C(C2=N3)=NC(NC2=O)=O)C3=C1
InChI
1S/C17H20N4O6/c1-7-3-9-10(4-8(7)2)21(5-11(23)14(25)12(24)6-22)15-13(18-9)16(26)20-17(27)19-15/h3-4,11-12,14,22-25H,5-6H2,1-2H3,(H,20,26,27)/t11-,12+,14-/m0/s1
InChI key
AUNGANRZJHBGPY-SCRDCRAPSA-N
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This Item | R9504 | V-067 | R7649 |
|---|---|---|---|
| biological source Eremothecium ashbyii | biological source Eremothecium ashbyii | biological source - | biological source - |
| assay ≥98% | assay ≥98% | assay - | assay 98.0-102.0% dry basis |
| form powder | form powder | form liquid | form powder |
| storage temp. room temp | storage temp. room temp | storage temp. −20°C | storage temp. - |
| mp 290 °C (dec.) (lit.) | mp 290 °C (dec.) (lit.) | mp 290 °C (dec.) | mp 290 °C (dec.) (lit.) |
| color yellow to orange | color yellow to orange | color - | color dark yellow |
General description
Application
Biochem/physiol Actions
Storage Class Code
11 - Combustible Solids
WGK
WGK 1
Flash Point(F)
Not applicable
Flash Point(C)
Not applicable
Personal Protective Equipment
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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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