1️⃣ Product Description

Product Name: L-Cystine Standard
CAS Number: 56-89-3
Product Code: C-A25017X
Category: Amino Acid Standard

Short Overview

L-Cystine (CAS 56-89-3) is a high-purity amino acid reference standard (≥ 95%) designed for precise quantitative analysis, method validation, and quality control in pharmaceutical, nutritional, food, and biochemical laboratories. Its stability under room temperature, dry conditions ensures reliable cystine profiling in analytical environments.

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Information

💡 Light-protected storage ensures long-term stability — ideal for trace-level L-Cystine quantification.

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2️⃣ Features & Benefits / Technical Information

Features & Benefits

✅ High-purity grade ≥ 95%, validated via HPLC
✅ COA & SDS included with every shipment
✅ Produced under ISO/IEC 17025 & GMP quality systems
✅ Stable under room temperature, dry storage
✅ Compatible with HPLC, LC-MS, and UV detection
✅ Light-protective packaging ensures global shipping safety

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Technical Information

📎 Each batch is verified for identity, purity, and photostability.

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3️⃣ Applications

L-Cystine standard is widely used in:

Pharmaceutical Analysis

• QC of cystine-containing formulations

• Assay and impurity detection in amino acid APIs

Food & Nutrition Testing

• Quantification in protein supplements, fortified foods, and beverages

Clinical & Biomedical Research

• Studies on cystine metabolism, enzymatic pathways, and nutritional analysis

Method Development & Validation

• Calibration curves, linearity, recovery, and precision testing for L-Cystine analytical methods

💡 Ensures high accuracy even at trace-level L-Cystine concentrations.

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4️⃣ Frequently Asked Questions (FAQs)

Q1. Which analytical techniques are compatible?
HPLC, LC-MS, and UV spectroscopy.

Q2. Does the shipment include COA & SDS?
Yes — both are provided with every order.

Q3. Any special storage requirements?
Store at room temperature, dry, and protect from light.

Q4. Are there handling precautions?
Minimize light exposure and moisture contact.

Q5. Are bulk or custom sizes available?
Yes, multi-gram quantities and custom packaging can be provided upon request.

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5️⃣ Ordering & Support

📦 Delivery: Ships worldwide within 3–5 business days
🧾 Included: COA & SDS
🌍 Global Shipping: Light-protected packaging ensures product integrity

📩 Sales: sales@hipsoulab.com
📞 Customer Support: +86-755-28502380

💬 Hipsoul — Delivering purity, precision, and reliability to analytical laboratories worldwide.