4-(Dimethylamino)benzaldehyde (DMAB) Reagent Grade | CAS 100-10-7 | Ehrlich’s Reagent Component | Australia Supplier

4-(Dimethylamino)benzaldehyde (DMAB) — Reagent Grade

CAS 100-10-7 | Chromogenic Indole Detection Reagent | Ehrlich’s Reagent Component

Catalogue Number: ASC-8069
CAS Number: 100-10-7
Molecular Formula: C₉H₁₁NO
Molecular Weight: 149.19 g/mol
HS / AHECC Code: 2912.29.00 – Other aldehydes

High-Purity DMAB for Analytical & Microbiological Applications

4-(Dimethylamino)benzaldehyde (DMAB) is a reagent-grade aromatic aldehyde widely used in analytical chemistry, microbiology, and biochemical research. It is best known as the primary chromogenic component of Ehrlich’s reagent, used for the detection of indole-containing compounds such as tryptophan, tryptamine, and microbial indole metabolites.

Ausamics DMAB is supplied as high-purity reagent-grade material (≥98.5%) to ensure consistent colour development, reproducible assay performance, and reliable analytical results.

Available from Australian stock for fast local dispatch.

Why Choose Ausamics DMAB?

✔ Reagent Grade Purity (≥98.5%)
✔ Essential for Ehrlich’s Reagent Preparation
✔ Reliable Colour Development in Indole Assays
✔ Suitable for Research & Quality Control Laboratories
✔ Batch-Level COA Available
✔ Australian Supplier – Reduced Lead Times

Key Applications

Microbiology & Biochemical Assays

• Preparation of Ehrlich’s reagent

• Indole test for bacterial identification

• Detection of indole-positive microorganisms

• Qualitative detection of tryptophan derivatives

Analytical Chemistry

• Chromogenic detection reactions

• Spectrophotometric assay development

• Aldehyde-based derivatisation reactions

Pharmaceutical & Fine Chemical Research

• Intermediate in synthesis

• Analytical method development

• Quality control testing

Principle of Reaction

Under acidic conditions, DMAB reacts with indole functional groups to form a coloured Schiff-base-type complex. The intensity of the colour provides a qualitative or semi-quantitative indication of indole presence in biological or chemical samples.

This reaction is widely used in microbiological testing workflows and analytical laboratories due to its sensitivity and visual clarity.

Technical Specifications

Appearance: Light yellow to beige crystalline powder
Purity: ≥ 98.5% (Reagent Grade)
Solubility: Soluble in organic solvents; limited solubility in water
Light Sensitivity: Sensitive — protect from light
Chemical Class: Aromatic aldehyde

Storage & Handling

Store in a tightly sealed container.
Keep in a cool, dry, well-ventilated area.
Protect from moisture and direct light exposure.

Refer to SDS for safety and handling precautions.

Quality & Documentation

• Certificate of Analysis (CoA) supplied per batch

• Safety Data Sheet (SDS) available

• Controlled manufacturing and packaging conditions

• Suitable for regulated laboratory environments

Regulatory & Trade Information

HS / AHECC Code: 2912.29.00
Classification: Other aldehydes

Not classified as a finished pharmaceutical product.
For laboratory research and professional use only.

Intended Use

For laboratory research and analytical use only.
Not for human or animal consumption.
Not for food, feed, or therapeutic administration.

Why Buy DMAB from Ausamics?

Ausamics is an Australian life-science supplier specialising in microbiological reagents and analytical chemicals.

We provide:

• Local Australian dispatch

• Reliable reagent-grade quality

• Competitive pricing

• Responsive technical and commercial support

• Consistent batch-to-batch supply

Ideal for universities, diagnostic laboratories, food testing facilities, and research institutions.