N-Acetyl-L-cysteine/NAC with CAS 616-91-1
What is N-Acetyl-L-cysteine?
NAC (N-Acetylcysteine) appears as a white crystalline powder with a slight sulfurous odor. It is freely soluble in water and ethanol. As a precursor to glutathione — the body’s primary endogenous antioxidant — NAC plays a critical role in redox homeostasis, detoxification, and immune function.
N-Acetyl-L-Cysteine (NAC) is a highly stable form of the amino acid cysteine and serves as a precursor to the critical antioxidant glutathione in the body. It is widely recognized for its antioxidant, mucolytic, and detoxifying properties. NAC helps reduce the viscosity of mucus, making it easier to expel, and supports liver function by neutralizing harmful substances. It is commonly used in the treatment of respiratory conditions, liver disorders, and as a supplement to enhance antioxidant defenses.
Runtai Chemical is a professional and reliable China manufacturer of N-Acetyl-L-cysteine/NAC with CAS 616-91-1 with higher purity and lower price. If you are interested in our N-Acetyl-L-cysteine/NAC, PLS free to contact us for a free sample!
Product Advantages
- Potent Antioxidant Activity: NAC is a direct precursor to glutathione (GSH), replenishing the body’s most powerful antioxidant system — scavenging free radicals and neutralizing oxidative stress.
- Reliable Global Supply: Established export operations with stable inventory and flexible packaging (25 kg drums, 1 kg, custom).
- Mucolytic & Respiratory Support: Widely used as a mucolytic agent to break down mucus disulfide bonds — a key active ingredient in OTC cough and chest formulations worldwide.
- Stable & Easy to Formulate: Excellent water solubility and good stability under standard storage conditions make NAC easy to incorporate into tablets, capsules, effervescent powders, and injectables.
N-Acetyl-L-cysteine Quick details
- Chemical Name:N-Acetyl-L-cysteine
- CAS No.:616-91-1
- EINECS: 210-498-3
- Molecular Formula: C5H9NO3S
- Molecular weight:163.19
- Appearance:White crystals powder
- Assay:99%
- Synonyms:(S)-ALPHA-AMINO-2-NAPHTHALENEPROPIONIC ACID;RARECHEM BK PT 0097;N-ACETYL CYSTEINE;N-ACETYL-3-MERCAPTOALANINE;N-ACETYL-L-(+)-CYSTEINE;N-ACETYL-L-CYSTEINE;N-ALPHA-ACETYL-L-CYSTEINE;AC-L-CYS-OH
N-Acetyl-L-cysteine Typical Properties
| Item | Specifications | Results |
| Appearance | White crystals powder | Conforms |
| Identification | Infrared absorption spectrum | Conforms |
| PH | 2.0-2.8 | 2.50 |
| Assay | 98.5%-101.0% | 99.93% |
| Specific Rotation[α]20/D | +21.3°- +27.05° | +23.5° |
| Transmittance | ≥98.0% | 98.5% |
| Chloride（CL） | ≤0.04% | ＜0.04% |
| Sulfate | ≤0.03% | ＜0.03% |
| Iron(Fe) | ≤20ppm | ＜20ppm |
| Ammonium | ≤0.02% | ＜0.02% |
| Arsenic | ≤1ppm | ＜1ppm |
| Heavy metal(Pb) | ≤10ppm | ＜10ppm |
| Loss on drying | ≤0.5% | 0.10% |
| Residue on ignitin | ≤0.20% | 0.03% |
| Conclusion | The results conforms with enterprise standards | |
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N-Acetyl-L-cysteine Applications
- Pharmaceutical Industry: Active pharmaceutical ingredient (API) in oral and intravenous formulations. Widely used as a mucolytic (chronic bronchitis, COPD), acetaminophen overdose antidote, and contrast-induced nephropathy prophylaxis.
- Nutraceuticals & Dietary Supplements: Popular ingredient in antioxidant, liver health, detox, and sports nutrition supplements. Used in capsule, tablet, effervescent powder, and drink mix formats to support glutathione levels and cellular protection.
- Food & Beverage Additive: Used as a dough conditioner and antioxidant in bakery products. NAC improves dough extensibility, reduces mixing time, and extends shelf life by inhibiting oxidative degradation of food products.
- Cosmetics & Skin Care: Incorporated in anti-aging creams, whitening serums, and hair care products for its ability to boost skin glutathione, reduce melanin synthesis, and protect against UV-induced oxidative damage.
N-Acetyl-L-cysteine Package & Storage
- Package: 25kg/drum
- Storage: Store in a cool place and keep it sealed to avoid direct sunlight.
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