Specifications

validamycin 60%TC/60%A/25%SP/10%SL
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Detailed Product Description

 

validamycin 60%TC(technical)

validamycin 60%A/25%SP/10%SL

 

Classification: fungicide
 

Common name

validamycin (JMAF); validamycin A (Japanese Antibiotics Research Association)

 

IUPAC name

1L-(1,3,4/2,6)-2,3-dihydroxy-6-hydroxymethyl-4-[(1S,4R,5S,6S)-4,5,6-trihydroxy-3-hydroxymethylcyclohex-2-enylamino]cyclohexyl b-D-glucopyranoside

 
Chemical Abstracts name

 [1S-(1a,4a,5b,6a)]-1,5,6-trideoxy-4-O-b-D-glucopyranosyl-5-(hydroxymethyl)-1-[[4,5,6-trihydroxy-3-(hydroxymethyl)-2-cyclohexen-1-yl]amino]-D-chiro-inositol

 

CAS RN [37248-47-8]

Formulation types: DP; DS; SL;

Molecular formula: C20H35NO13 

Molecular weight: 497.5 

Properties: Colourless, odourless, hygroscopic powder.

 

 

Toxicities:

Oral	Acute oral LD50 for rats and mice >20 000 mg/kg.
Skin and eye	Acute percutaneous LD50 for rats >5000 mg/kg. Non-irritating to skin (rabbits). Not a skin sensitiser (guinea pigs).
Inhalation	LC50 (4 h) for rats >5 mg/l air.
NOEL	In 90 d feeding trials, rats receiving 1000 mg/kg diet and mice receiving 2000 mg/kg diet showed no ill-effects. In 2 y feeding trials, NOEL for rats was 40.4 mg/kg b.w. daily.
Toxicity class	WHO (a.i.) III (Table 5); EPA (formulation) IV

 

          

 

Applications:

Biochemistry	Inhibitor of trehalase, an enzyme which mediates the digestion of the carbohydrate trehalose and transport of glucose to the hyphals tips.
Mode of action	Non-systemic antibiotic with fungistatic action. Causes abnormal branching of the tips of the pathogen, followed by cessation of further development.
Uses	Control of Rhizoctonia solani in rice, potatoes, vegetables, strawberries, tobacco, ginger and other crops; damping-off diseases of cotton, rice and sugar beet, etc. Applied as a foliar spray, soil drench, seed dressing, or by soil incorporation, at 1.25-1.56 g/ha (liquid), 9-12 g/ha (DL formulation), and 0.090 mg/kg (DL or seed dressing).

 

 

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