Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Leucomycin A5
Price: Check
Purity: 98.0%
Stocking Period: 10 Day
Contact: Yang
Email: sales@echemcloud.com

DC Chemicals Limited
China
Product Name: Leucomycin a5
Price: $Inquiry/100mg $Inquiry/250mg $Inquiry/500mg
Purity: 98.0%
Stocking Period: 3 Day
Contact: Tony Cao
Email: sales@dcchemicals.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: leucomycin A5
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Stocking Period: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

18361-45-0

18361-45-0 structure

18361-45-0 structure

Name: Leucomycin A5
Chemical Name: [2,3'-Bi-1H-indole]-2',3-diol
CAS Number: 18361-45-0
Molecular Formula: C₃₉H₆₅NO₁₄
Molecular Weight: 771.93200
Create Date: 2017-09-27 00:03:41
Modify Date: 2025-08-27 07:25:39
Leucomycin a5 is a metabolite from the leucomycin complex, which was originally isolated from S. kitasatoensis. It is active against a variety of Gram-positive and Gram-negative bacteria (MICs = 0.04-0.8 μg/ml) but not against K. pneumoniae, S. typhimurium, or E. coli with MICs ranging from 5 to >10 μg/ml. Leucomycin A5 is also active against penicillin-susceptible and -resistant S. pyogenes (MICs = 0.8 and 3.2 μg/ml, respectively) and S. faecalis (MIC = 0.8 μg/ml).

Name	[2,3'-Bi-1H-indole]-2',3-diol
Synonyms	leuco-indirubin leucomycin A5

Density	1.22g/cm3
Boiling Point	871.4ºC at 760 mmHg
Molecular Formula	C₃₉H₆₅NO₁₄
Molecular Weight	771.93200
Flash Point	480.8ºC
Exact Mass	771.44100
PSA	199.98000
LogP	2.19660
Vapour Pressure	1.86E-35mmHg at 25°C
Index of Refraction	1.543

CHEMICAL IDENTIFICATION

RTECS NUMBER :: OH4726170

CHEMICAL NAME :: Leucomycin V, 4(sup B)-butanoate

CAS REGISTRY NUMBER :: 18361-45-0

LAST UPDATED :: 199612

DATA ITEMS CITED :: 2

MOLECULAR FORMULA :: C39-H65-N-O14

MOLECULAR WEIGHT :: 772.05

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >1 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: USXXAM United States Patent Document. (U.S. Patent Office, Box 9, Washington, DC 20231) Volume(issue)/page/year: #3535309

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: >500 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: USXXAM United States Patent Document. (U.S. Patent Office, Box 9, Washington, DC 20231) Volume(issue)/page/year: #3535309

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