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Hunan Zhongqi Pharmaceutical Co., Ltd.

20 YRS

Hunan, China

CNY 13 Million

39960 m²

Less than 50 people

Main Products: Tolcapone / 3',5'-Cyclic Amp / Nimustine Hydrochloride / Potassium Sodium Dehydroandrographolide Succinate / ((5-Thiazolyl)Methyl)-(4-Nitrophenyl)Carbonate / 4-Cyanotetrahydro-4H-Pyran / 3-(4-Phenoxyphenyl)-1H-Pyrazolo[3,4-d]Pyrimidin-4-Amine / Toluene-4-Sulfonic Acid (R)-(Tetrahydro-Furan-3-Yl) Ester / N-(4-Nitrophenoxycarbonyl)-L-Valine Methyl Ester / 5-Chloromethyl-2-Isopropyl-Thiazole

Hunan, China

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Tolcapone / CAS 134308-13-7

OVERVIEW

Packaging

1 KG/BOTTLE

Lead Time

In Stock

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DESCRIPTION

Tolcapone

Product name：(3,4-Dihydroxy-5-nitrophenyl)(4-methylphenyl)methanone

Structure：

Molecular Formula：C₁₄H₁₁NO₅

Molecular Weight：273.24

CAS Number：134308-13-7

NMPA approval No.：H20050205

National Drug standards：YBH02292005-2016Z

Test	USP	Results
Color & Appearance	yollow crystalline powder	yollow crystalline powder
Infrared spectrum	consistent with the structure	Conforms
Assay (HPLC )	98.5 % ~101.5%	99.9 %
Total impurities (HPLC)	NMT 0.5 %	0. 1%
Related compound A (4N-Methyl-3,4-dihydroxybenzophenone)	NMT 0.1 %	Conforms
Related compound B (4-Hydroxy-3-methoxy-4¢-methyl-5-nitrobenzophenone )	NMT 0.2 %	Conforms
Unknown impurities ( individual )	NMT 0.1 %	Conforms
Loss on Drying	NMT 0.1 % ( 80℃)	0.06 %
Residue on ignition	NMT 0.1%	0.05%
Heavy metals (as Pb)	NMT 20 ppm	Conforms

Package: 1kg

Storage ：Preserve in tight light-resistant containers ,and store between 20℃～25℃.

Typical Properties

CAS No.

134308-13-7

Formula

C14H11NO5

Molecular Mass

273.24100

Exact Mass

273.06400

PSA

103.35000

Logp

3.06860

IUPAC

(3,4-dihydroxy-5-nitrophenyl)-(4-methylphenyl)methanone

SMILES

CC1=CC=C(C=C1)C(=O)C2=CC(=C(C(=C2)O)O)[N+](=O)[O-]

Matter Classification

organic

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