Buy pharmaceutical intermediates principle ingredients in manufacturing medicines


5-hydroxytryptophan 99.0%

Name: L-5- hydroxy-tryptophan (Griffonia Seeds Extract)

Content Specifications:  5-HTP 99%

Molecular Formula: C11H12N2O3

Molecular Weight: 220.23

CAS No.: 4350-09-8



Assay: 5-HTP≥99.0%

Physical Control

Appearance: Fine off-white powder

Odor: Characteristics

Taste: Characteristics

Sieve Analysis: NLT 95.0% pass 80 mesh

Moisture Content: ≤2.0%

Ash: ≤1.0%

Chemical Control

Arsenic?As?: ≤2ppm

Cadmiun(Cd): ≤1ppm

Lead(Pb): ≤3ppm

Mercury(Hg): ≤0.1ppm

Heavy Metals: ≤10ppm

Pesticides Residues: ≤1ppm

Microorganism Control

Total Plate Count: ≤10000cfu/g

Yeast & Mold: ≤1000cfu/g

Salmonella: Negative

E.Coli: Negative


7-Acetoxy-4-Methylcoumarin is used as a pharmaceutical intermediate for the production of anti-allergy cromolyn sodium.

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ADB-FUBINACA Technical 98%

E-mail: Sunny(at) 
whatsapp/skype: 0086-13189792862
Product advantage: 
1. We can guarantee the quality of the product. 
2. Fast and safe delivery . 
3. We can provide competitive price for you. The more you buy , the lower the price will be. 
4. We are an experienced enterprise of manufacturing various kind of Organic intermediates, Our customers come from all parts of the world, had a very good cooperation between us.Customer very pleased with our products. 
Hebei Chenxu Biotechnology Co., LTD can provide you stable quality, high purity, good packaging at most competitive price. 
Chenxu supply and export high quality and purity research chemicals in both large and small quantities…our products is as below:Our products are of High purity (above 99%) . 
etizolames 5cabp 4-fpet 6apb abc mdmaes MDPHP U-49900 
TH-PVP 3cmc 4cmc 4mmcs 4cdc 4-MPD MDPPP MDPBP 
U-47700 4F-PHP BK-2C-B EG-018 a-pvpes carfentanyles Hexen 
5-Methylethylone 4-Aco-DMT NM-2201 EAM-2201 AMs-2201 
MAB-CHMINACA MAM-2201 Mexedrone Furanylfentanyl(Fu-F) 
diclazepam flubromazolam meclonazepam flubromazepam nitrazolam 


Bis(4-cyanophenyl)methanol is used as intermediates of letrozole.

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CNS Library LAB GRADE >98%

CNS Library contains 600 kinds of compounds, which target for central nervous system and are used for neurologic disease’s drug screening.

Chloromethyl chloroformate

Chloromethyl chloroformate Cas No: 22128-62-7

Dapagliflozin FOOD GRADE 1

CBNumber: CB91011730
Molecular Formula: C21H25ClO6
Formula Weight: 408.875
CAS No.: 461432-26-8


Dicyclohexylamine Benzoate

Dicyclohexylamine Benzoate is used as pharmaceutical intermediate and volatile corrosion inhibitor.

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