Molekula
Acetylcysteine - EP CRS
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Acetylcysteine (EP CRS) is a synthetic amino acid derivative primarily used as a mucolytic agent to break down mucus in respiratory conditions, as well as a precursor for glutathione synthesis in pharmaceuticals and nutritional supplements. It is also employed in antidotal therapy for acetaminophen poisoning. This European Pharmacopoeia (EP) compliant grade meets strict quality standards for pharmaceutical applications. CAS 616-91-1, molecular formula HSCH₂CH(NHCOCH₃)CO₂H, molecular weight 163.19 g/mol. Store between 2–8°C in a dry, well-ventilated area, protected from light. Signal word: Warning (H319: causes serious eye irritation). Molekula supplies Acetylcysteine - EP CRS from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
Specifications available on request — see Documents below or contact our sales team.
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Acid |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | White, crystalline powder |
| Odour | Slight acetic odor |
| Melting Point | 109.5 °C |
| Solubility (other solvents) | Soluble in water, alcohol, hot isopropyl alcohol, methyl acetate, and ethyl acetate |
| Vapour Pressure | 1.1 × 10⁻⁵ mmHg at 25 °C (Estimated) |
| pKa | pKa = 9.52 (at 25 °C) |
| log P (octanol/water) | -0.66 |
Source: PubChem CID 12035 (HSDB, DrugBank)
Identification
| Property | Value |
|---|---|
| SKU | 90034182 |
| CAS Number | 616-91-1 |
| IUPAC Name | (2R)-2-acetamido-3-sulfanylpropanoic acid |
| EC Number | 210-498-3 |
| Molecular Formula | HSCH2CH(NHCOCH3)CO2H |
| Molecular Weight | 163.19 |
| Exact Mass | 163.0303 |
| SMILES | CC(=O)N[C@@H](CS)C(=O)O |
| InChIKey | PWKSKIMOESPYIA-BYPYZUCNSA-N |
| InChI | 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 |
| PubChem CID | 12035 |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29309016 |
| Tariff Code | 2930901600 |
Safety & GHS
-
Health Hazard
GHS07
Hazard statements
- H319 Causes serious eye irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is Acetylcysteine - EP CRS primarily used for?
Acetylcysteine - EP CRS is primarily used as a mucolytic agent to break down mucus in respiratory conditions and as an antidote for acetaminophen (paracetamol) overdose.
What is the chemical formula and molecular weight of Acetylcysteine - EP CRS?
The chemical formula is HSCH₂CH(NHCOCH₃)CO₂H, and the molecular weight is 163.19 g/mol.
How should Acetylcysteine - EP CRS be stored?
Store at 2 to 8°C in a dry, well-ventilated place, away from incompatible substances.
What grade of Acetylcysteine is this, and what does 'EP CRS' mean?
'EP CRS' indicates this is European Pharmacopoeia (EP) grade, meeting strict quality standards for pharmaceutical applications, and 'CRS' denotes it is a Certified Reference Standard for analytical testing.
Can Molekula supply Acetylcysteine - EP CRS in bulk quantities?
Yes, Molekula can supply Acetylcysteine - EP CRS in bulk, with quantities tailored to your research or production needs—please contact us for pricing and availability.
What documentation comes with an order of Acetylcysteine - EP CRS?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation confirming EP CRS compliance and purity.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.