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INTERMEDIARY SOURCING

High-Purity Drug Intermediates

We source and supply specialized chemical synthesis intermediates required for industrial API manufacturing. Every compound matches stringent gas or liquid chromatography purity indicators, with complete technical documentation.

CAS ID: 29270-56-2

5-Chloro-4-Amino-2,1,3-Benzothiadiazole

5-Chloro-4-amino-2,1,3-benzothiadiazole is a heterocyclic organic compound featuring a benzothiadiazole core structure decorated with ortho chloro and amino substituents. This intermediate is valued for its remarkable versatility in multi-step organic synthesis and acts as a central building block for diverse cardiovascular and anti-spasticity agents. Sourced strictly from validated manufacturers.

Molecular Weight: 185.63 g/mol
Appearance: Yellow to orange-brown crystalline powder
Purity GC/HPLC: ≥98.0%
Synthesis Application
A key clinical-grade pharmaceutical intermediate used in the synthesis of various therapeutic compounds. This benzothiadiazole derivative serves as an important building block in drug development and active API manufacturing, produced under stringent conditions with premium quality control.
Impurity Profile Highlights
✓ Single maximum impurity < 0.1%
✓ Total impurities < 0.5%
✓ Heavy metals < 10 ppm
✓ Sulfated ash < 0.1%
Packaging Standard
PACK SIZE: Double LDPE bags
STORAGE: Store at room temperature 15-30°C (59-86°F)
SHELF LIFE: 24 months when stored under recommended, un-opened container parameters
CAS ID: 2103-57-3

2,3,4-Trimethoxy Benzaldehyde

2,3,4-Trimethoxy Benzaldehyde features three electron-donating methoxy groups positioned at the 2, 3, and 4 spots of the benzene ring. This rich electron density provides highly optimized reactivity and regioselectivity, making it an indispensable starting intermediate for clinical-grade synthesis.

Molecular Weight: 196.20 g/mol
Appearance: White to off-white crystalline powder or needles
Purity GC/HPLC: ≥99.0%
Synthesis Application
A premium, high-purity aromatic aldehyde intermediate extensively utilized as a building block in the chemical synthesis of cardiovascular, anti-cancer, and CNS-active APIs. Offered with complete regulatory and quality documentation support.
Impurity Profile Highlights
✓Single maximum impurity < 0.1%
✓Total impurities < 0.5%
✓Heavy metals < 10 ppm
✓Sulfated ash < 0.1%
Packaging Standard
PACK SIZE: Amber glass bottles or heavy seal HDPE containers
STORAGE: Store at controlled room temperature 15-25°C (59-77°F)
SHELF LIFE: 36 months when stored in sealed, air-tight amber containers
CAS ID: 42122-33-2

3-Dibenzyl Phosphono

3-Dibenzyl Phosphono is an organophosphorus reagent featuring protective benzyl ester structures. It is widely valued in antiviral nucleotide chemistry for its robust chemical stability, ease of selective deprotection under mild conditions, and excellent kinetic properties during coupling reactions.

Molecular Weight: 262.24 g/mol
Appearance: Clear to pale yellow viscous liquid or white to off-white solid
Purity GC/HPLC: ≥97.0%
Synthesis Application
A highly versatile organophosphorus intermediate widely used in medicinal organic synthesis, particularly for the development of advanced antiviral and anticancer phosphonate-linked API prodrugs.
Impurity Profile Highlights
✓Single maximum impurity < 0.1%
✓Total impurities < 0.5%
✓Heavy metals < 10 ppm
✓Sulfated ash < 0.1%
Packaging Standard
PACK SIZE: High-integrity, secure HDPE bottles with induction seal liners
STORAGE: Store at refrigerated temperature 2-8°C preferred for long-term stability
SHELF LIFE: 36 months when stored strictly under recommended refrigeration parameters
▣ Complete Intermediates Catalog
26 chemical intermediates across our sourcing network — browse our pharmaceutical intermediate portfolio.
Intermediate
CAS No.
End Use
Action
5-Chloro-4-Amino-2,1,3-Benzothiadiazole FULL DOSSIER
29270-56-2
Key starting material and intermediate for cardiovascular drug synthesis
2,3,4-Trimethoxy Benzaldehyde FULL DOSSIER
2103-57-3
Key intermediate for calcium channel blockers and modern cardiovascular agents
3-Dibenzyl Phosphono FULL DOSSIER
42122-33-2
Key intermediate in antiviral nucleotide analogue synthesis
(+/-)-3-Carbamoylmethyl-5-Methyl Hexanoic Acid
181289-15-6
Pregabalin
(R)-1-[(4-Chloro Phenyl)Phenylmethyl] Piperazine
130018-88-1
Levocetirizine
2,2 Chloro Ethoxy Ethanol
628-89-7
Quetiapine Fumarate, Hydroxyzine
2-Bromo-3-Chloropropiophenone
3491-51-8
Bupropion
3,4 Dimethoxy Benzoic Acid
93-07-2
Itopride
4-Amino 1,2,4 Triazole
584-13-4
Fluconazole
4-Bromo Phenol
106-41-2
Adapalene
4-Bromobenzylcyanide
16532-78-2
Bromo Pheniramine Maleate
4-Bromophenyl Acetic Acid
1878-68-8
Bilastine, Macitentan
4-Chloro Benzhydryl Amine
150700-52-0
Levocetirizine
4-Chloro Benzhydryl Piperazine
303-26-4
Cetirizine, Hydroxyzine, Buclizine, Meclizine
4-Chloro Benzophenone
134-85-0
Cetirizine, Levocetirizine, Hydroxyzine
4-Chloro 4-Hydroxy Benzophenone
420-78-3
Fenofibrate
4-Chloro Benzyl Cyanide
140-53-4
Chlorpheniramine Maleate
4-Chloro Benzoyl Chloride
122-01-0
Cetirizine
4-Nitrobenzene Sulphonyl Chloride
98-74-8
Benazepril, Darunavir, Amprenavir
Ethyl 2-Chloroacetoacetate
609-15-4
Apixaban, Febuxostat
Ethyl Bromide
74-96-4
Ethylating agent in various API synthesis routes
Formamidine Acetate
3473-63-0
Itraconazole — heterocyclic ring-formation reagent in azole antifungal intermediate synthesis
Methyl Nicotinate
93-60-7
Pharmaceutical and agrochemical intermediate
N-Butyl Nitrite
544-16-1
Nitrosation agent for next-generation API intermediate synthesis
Phthalide
87-41-2
Pharmaceutical intermediate
(R)-(+)-N-Benzyl-1-Phenylethylamine
38235-77-7
Chiral auxiliary for asymmetric chemical synthesis
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