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
213942
3-Methylcholanthrene (20)
98%
Sinónimos:
20-Methylcholanthrene, Methylcholanthrene
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InChI key
PPQNQXQZIWHJRB-UHFFFAOYSA-N
InChI
1S/C21H16/c1-13-6-7-15-12-20-17-5-3-2-4-14(17)8-9-18(20)19-11-10-16(13)21(15)19/h2-9,12H,10-11H2,1H3
SMILES string
Cc1ccc2cc3c(ccc4ccccc34)c5CCc1c25
assay
98%
form
solid
bp
280 °C/80 mmHg (lit.)
Quality Level
mp
178-180 °C (lit.)
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1 of 4
Este artículo | |||
|---|---|---|---|
| form solid | form solid | form solid | form solid |
| assay 98% | assay ≥98% (HPLC) | assay - | assay ≥98% (HPLC) |
| Quality Level 200 | Quality Level 200 | Quality Level 200 | Quality Level 100 |
| bp 280 °C/80 mmHg (lit.) | bp - | bp - | bp - |
| mp 178-180 °C (lit.) | mp - | mp - | mp - |
Application
Biochem/physiol Actions
signalword
Danger
hcodes
Hazard Classifications
Aquatic Chronic 4 - Carc. 1B
Clase de almacenamiento
6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type P3 (EN 143) respirator cartridges
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Cancer research has revealed that the classical model of carcinogenesis, a three step process consisting of initiation, promotion, and progression, is not complete.
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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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