Molekula
Acetylcysteine - USP CRS
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Certificate of Analysis with every batch
Acetylcysteine is a synthetic amino acid derivative primarily used as a mucolytic agent to break down mucus in respiratory conditions and as an antidote for acetaminophen overdose. It is also used in pharmaceutical formulations and as a dietary supplement. This USP Certified Reference Standard (CRS) has a CAS number of 616-91-1, with the molecular formula HSCH2CH(NHCOCH3)CO2H and a molecular weight of 163.19. It must be stored between 2 to 8°C and carries a signal word of *Warning* for safety. Molekula supplies Acetylcysteine - USP CRS from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Acetylcysteine is a synthetic amino acid derivative primarily used as a mucolytic agent to break down mucus in respiratory conditions and as an antidote for acetaminophen overdose. It is also used in pharmaceutical formulations and as a dietary supplement. This USP Certified Reference Standard (CRS) has a CAS number of 616-91-1, with the molecular formula HSCH2CH(NHCOCH3)CO2H and a molecular weight of 163.19. It must be stored between 2 to 8°C and carries a signal word of *Warning* for safety. Molekula supplies Acetylcysteine - USP CRS from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Pricing & pack sizes
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 |
Identification
| Property | Value |
|---|---|
| SKU | 90034181 |
| CAS Number | 616-91-1 |
| Molecular Formula | HSCH2CH(NHCOCH3)CO2H |
| Molecular Weight | 163.19 |
| SMILES | CC(=O)N[C@@H](CS)C(=O)O |
| 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 USP CRS commonly used for?
Acetylcysteine USP 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 molecular formula and molecular weight of Acetylcysteine?
The molecular formula is **HSCH₂CH(NHCOCH₃)CO₂H**, and the molecular weight is **163.19 g/mol**.
How should Acetylcysteine USP CRS be stored?
Store at **2–8°C** in a dry, well-ventilated area, away from incompatible substances and direct sunlight.
What grade of Acetylcysteine does Molekula supply, and is USP CRS available in bulk?
Molekula supplies **USP CRS grade** Acetylcysteine, and we can accommodate **bulk orders**—please contact us for pricing and lead times.
What safety classification does Acetylcysteine USP CRS have?
The product is labeled with a **Signal Word: Warning**, indicating moderate hazard levels under proper handling.
What documentation comes with an order of Acetylcysteine USP CRS?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **USP CRS compliance documentation** for traceability.
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.