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Protocatechuic acid

BGC Id:270238603049
CAS No:99-50-3
Synonyms:protocatechuate ; nsc 16631 ; protocatechuic aci ; rarechem al bo 0347 ; hypogallic acid ; protocatechuic acid ; 3,4-dihydroxybenzoic ; akos 220-70 ; protocatechoic acid ; 4-carboxypyrocatechol
Molecular Formula:C7H6O4
Molecular Weight:154.12
EINECS:202-760-0
Structural Formula

2026 - The most valued supplier

The following 5 notable providers have been checked and can be recommended.
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Conscientia Industrial
Assay: 98%min Specification: Pharmacopeia Standard or Enterprise Standard Alternative repackage service: 1G, 5G, 10G, 20G etc We are supplying customers with good quality and competitive price Please contact us for business

The last intensive check and update was carried out on 2026/10/01.

Identify

Synonyms:
protocatechuate ; nsc 16631 ; protocatechuic aci ; rarechem al bo 0347 ; hypogallic acid ; protocatechuic acid ; 3,4-dihydroxybenzoic ; akos 220-70 ; protocatechoic acid ; 4-carboxypyrocatechol
CAS:
99-50-3
EINECS:
202-760-0
Molecular Formula:
C7H6O4
MDL:
MFCD00002509
SMILES:
B(C1=CC(=CC=C1)C(=O)NCCOC)(O)O

Properties

Molecular Weight:
154.12 g·mol−1
Density:
1.6 g/cm3 (Predicted)
Melting point:
197-200 °C (dec.)(lit.)
Boiling point:
410.7° C at 760 mmHg (Predicted)
Solubility:
Soluble in water (1:50), ethanol, and ether.
download Download Molfile for :
3,4-Dihydroxybenzoic Acid

Suppliers

Organo Fine Chemicals

Company type: Producer
Organo Fine Chemicals is a seller of 2,6-Dibromoquinone-4-chlorimine. We are a fine chemical producer based at Mumbai, having a Multipurpose Production Plant situated at Tarapur in Mumbai. Our product range: - Organic Intermediates - Analytical Reagents - Phase Transfer Catalysts - Ion Pair Reagents - Peptide Synthesis Reagents - Acetylenic compounds
Country: India   Phone: +91-22-4212 8300   Telefax: +91-22-4212 8322

Wuhan PharmChem Co., LTD.

Company type: Import & export company
Country: P.R.China
Phone: +86 27 85835203
Telefax: +86 27 85835203
Wuhan PharmChem CO., LTD. Sclareolide will be also provided by us. has been a premier chemical supplier distributing high-quality chemicals to businesses in various industries for the whole world. At Wuhan PharmChem, we are committed to excellence.From manufacturing to packaging and delivery, we provide quality, reliability and the highest degree of customer service.Our scope of service is organized/structured around the unique needs of each client.Our mission is establish long-term relationships with our clients b ...

Shandong Ench Chemical Co.,Ltd

Shandong Ench Chemical Co.Ltd is a professional manufacturers and supplier in the world ,the main product include chemical pharmaceuticals and intermediates, food and feed additives, herbal extracts, agrochemicals and fine chemicals etc. It is a privet-owned enterprise and located in Zhangqiu industrial park, We believe that quality is the life of our company. Erythromycin thiocyanate is also served by Shandong Ench Chemical Co.,Ltd. We manufacture our products in strict accordance with ISO9001: 2000 quality management system during the whole entire ...
Company type: Producer
Country: P.R.China
Phone: +86-13869131854
Telefax: +86 531-8637666

Conscientia Industrial Co., Ltd (Zhejiang Conscientia Pharmaceutical)

Company type: Producer
Conscientia Industrial Co., Ltd (Conscientia Pharm) mainly engages in developing, manufacturing, marketing, APIs (Active Pharmaceutical Ingredients), pharmaceutical intermediates. Levodopa is also served by Conscientia Industrial Co., Ltd (Zhejiang Conscientia Pharmaceutical). Besides, we provide services of custom synthesis and contract manufacturing APIs (Active Pharmaceutical Ingredients), intermediates, fine chemicals for generic and new drugs. Conscientia Industrial aims to be world-class pharmaceutical raw materials supplier through unflagging efforts in quality, i ...
Country: P.R.China   Phone: +86 170 9858 0209   Telefax: +86 170 9858 0209

Shandong SanYoung Industry Co., Ltd

Country: P.R.China
Phone: +86 155-64526813
Telefax: +86 531-56897532
Shandong SanYoung Industry Co., Ltd is a scientific and technological company specializing in research and development, cooperative production and sales of chemical products. The company's main products include: photoinitiator; light stabilizer; polymer retardant; ultraviolet absorbent; fine chemical products and pharmaceutical intermediates, we can also customize chemicals for our customers. Additionally Vitamin b6 hydrochloride(pyridoxine) is supplied by us. Our company has a large number of customers with good reputation at home and abroad, ...

Safety Information

Hazard Classes:
Risk Codes:
36/37/38 (R)
Safety Codes:
26-36-37/39 (S)
WGK Germany:
3
RTECS:
UL0560000

What other providers are available for CAS 99-50-3?

In addition to the providers presented here for Protocatechuic acid with the CAS number 99-50-3, there are other 87 providers with slightly different product names available for this CAS number.

Kingreat Chemistry Company Limited | Simagchem Corporation | Hangzhou Verychem Science & Technology Co., Ltd. | Xiamen Hisunny Chemical Co., Ltd. | Sancai Industry Co.,Ltd. | Shandong Lanhai Industry Co.,Ltd. | H&Z Industry Co.,Ltd | Shandong Minglang Chemical Co., Ltd | Hangzhou Meite Industry Co., Ltd (Hangzhou Meite Chemical Co., Ltd) | Lori Industry Co., Ltd | Finetech Industry Limited | Capot Chemical Co., Ltd. | Win-Win Chemical Co., Limited | Xingrui Industry Co., Limited | Xiamen Equation Chemical Co.,Ltd | AK Scientific, Inc. | Molekula GmbH | Leap Chem Co., Ltd | Skyrun Industrial Co., Ltd. | BIOZOL Diagnostica Vertrieb GmbH | BuGuCh & Partners | Anhui Senrise Technology Co., Ltd. +60 additional providers that we know from the past
+1 additional providers that we know from the past




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