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545-48-2 Usage


Erythrodiol is a triterpene that has been found in olive oil and has diverse biological activities. It induces relaxation of isolated rat aortic rings precontracted with phenylephrine (EC50 = 3.38 μM). Erythrodiol inhibits the growth of HT-29 adenocarcinoma cells (EC50 = 48.8 μM). It induces production of reactive oxygen species (ROS) and apoptosis in MCF-7 cells when used at a concentration of 100 μM. Topical administration of erythrodiol (0.5 mg/ear) reduces ear edema and myeloperoxidase (MPO) activity induced by phorbol 12-myristate 13-acetate (TPA; ) in mice.


It is an essential reagent in the synthesis of aminopropoxytriterpenoids that have anticancer activity. 3β-Erythrodiol has pharmacological property as a vasodilatory agent. It may have interesting therapeutic potential as a new vasodilator drug, for protecting the cardiovascular system.

Check Digit Verification of cas no

The CAS Registry Mumber 545-48-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 5,4 and 5 respectively; the second part has 2 digits, 4 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 545-48:
72 % 10 = 2
So 545-48-2 is a valid CAS Registry Number.

545-48-2 Well-known Company Product Price

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  • Sigma-Aldrich

  • (09258)  Erythrodiol  analytical standard

  • 545-48-2

  • 09258-10MG-F

  • 1,602.90CNY

  • Detail



According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 13, 2017

Revision Date: Aug 13, 2017


1.1 GHS Product identifier

Product name erythrodiol

1.2 Other means of identification

Product number -
Other names Oleanolic alcohol

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:545-48-2 SDS

545-48-2Relevant articles and documents

Biocatalytic allylic hydroxylation of unsaturated triterpenes and steroids by Bacillus megaterium CGMCC 1.1741

Ge, Haixia,Li, Guolong,Shen, Pingping,Wang, Wei,Wang, Weiwei,Xu, Shaohua,Yu, Boyang,Zhang, Jian

, (2020/04/20)

In this study, we described the microbial catalyzed allylic oxidation by Bacillus megaterium CGMCC 1.1741 of three Δ12-pentacyclic triterpenes, erythrodiol (1), uvaol (2), hederagenin (3) and of four steroids including Δ5-steroids, diosgenin (4), pennogenin (5), 25(R,S)-ruscogenin (6) and Δ4-steroid, diosgenone (7). As a result, fourteen metabolites were generated with allyl hydroxyl moiety. Ten (1a-c, 2a, 2c, 3a, 5a-b, and 6a-b) of them were new natural products and their structures were determined on the basis of 1D/2D NMR and HR-MS data. Biocatalytic allylic oxidation by B. megaterium CGMCC 1.1741 is thus a potential non-toxic and efficient alternative method toward metal-mediated oxidation procedures in the synthesis of natural products and medicines.

An improved scalable synthesis of α- and β-amyrin

Serbian, Immo,Csuk, René

, (2018/07/13)

The synthesis of α- and β-amyrin was accomplished starting from easily accessible starting materials, oleanolic, and ursolic acid. The procedures allow the preparation of β-amyrin in an exceptionally short scalable manner via selective iodation and reduction. For α-amyrin, a different synthetic approach had to be chosen providing access to α-amyrin in medium-to-large scale.

Semi-synthesis and Structure–Activity Relationship of Neuritogenic Oleanene Derivatives

Bian, Linglin,Cao, Shining,Cheng, Lihong,Nakazaki, Atsuo,Nishikawa, Toshio,Qi, Jianhua

supporting information, p. 1972 - 1977 (2018/09/06)

(3S,4R)-23,28-Dihydroxyolean-12-en-3-yl (2E)-3-(3,4-dihydroxyphenyl)acrylate (1 a), which possesses significant neuritogenic activity, was isolated from the traditional Chinese medicine (TCM) plant, Desmodium sambuense. To confirm the structure and to assess biological activity, we semi-synthesized 1 a from commercially available oleanolic acid. A series of novel 1 a derivatives was then designed and synthesized for a structure–activity relationship (SAR) study. All synthetic derivatives were characterized by analysis of spectral data, and their neuritogenic activities were evaluated in assays with PC12 cells. The SAR results indicate that the number and position of the hydroxy groups on the phenyl ring and the triterpene moiety, as well as the length of the (saturated or unsaturated) alkyl chain that links the phenyl ring with the triterpene critically influence neuritogenic activity. Among all the tested compounds, 1 e [(3S,4R)-23,28-dihydroxyolean-12-en-3-yl (2E)-3-(3,4,5-trihydroxyphenyl)acrylate] was found to be the most potent, inducing significant neurite outgrowth at 1 μm.

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