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
PHR1098
N-Acetyl-L-cysteine
Pharmaceutical Secondary Standard; Certified Reference Material
Synonym(s):
LNAC, NAC
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Product Name
N-Acetyl-L-cysteine, Pharmaceutical Secondary Standard; Certified Reference Material
InChI
1S/C5H9NO3S/c1-3(7)6-4(2-10)5(8)9/h4,10H,2H2,1H3,(H,6,7)(H,8,9)/t4-/m0/s1
InChI key
PWKSKIMOESPYIA-BYPYZUCNSA-N
SMILES string
CC(=O)N[C@@H](CS)C(O)=O
grade
certified reference material
pharmaceutical secondary standard
agency
traceable to Ph. Eur. A0150000
traceable to USP 1009005
API family
acetylcysteine
CofA
current certificate can be downloaded
storage condition
protect from light
technique(s)
HPLC: suitable
gas chromatography (GC): suitable
mp
106-108 °C (lit.)
application(s)
pharmaceutical (small molecule)
format
neat
storage temp.
2-8°C
Quality Level
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Analysis Note
Application
Biochem/physiol Actions
General description
N-Acetyl-L-cysteine is an endogenous aminothiol which is a component of human plasma and urine.[2] It finds use in clinical applications as a mucolytic agent typically administered by inhalation.[3]
Other Notes
comparable product
related product
signalword
Warning
hcodes
Hazard Classifications
Eye Irrit. 2
Storage Class
13 - Non Combustible Solids
wgk
WGK 2
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.
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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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