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158657-44-4

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158657-44-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 158657-44-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,8,6,5 and 7 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 158657-44:
(8*1)+(7*5)+(6*8)+(5*6)+(4*5)+(3*7)+(2*4)+(1*4)=174
174 % 10 = 4
So 158657-44-4 is a valid CAS Registry Number.

158657-44-4Downstream Products

158657-44-4Relevant articles and documents

Compound containing natural butenolide skeleton as well as preparation and application thereof

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Paragraph 0042; 0045-0047, (2020/09/10)

The invention discloses a novel compound with a natural butenolide skeleton structure as well as preparation and application thereof. The structural formula of the compound is shown as a formula I-1 or a formula I-2 (See the specification), and in the formula, R1 is hydrogen, halogen, nitro or cyano, or substituted or unsubstituted hydroxyl, amino, carboxyl, ester group, hydrosulfenyl, acylamino,ureido, C1-C5 straight-chain or branched-chain alkyl, and C1-C5 alkoxy, and R2 is hydrogen, halogen, nitro or cyano, or substituted or unsubstituted hydroxyl, amino, carboxyl, ester group, hydrosulfenyl, acylamino, ureido, phenyl, aryl and heteroaryl, or substituted or unsubstituted C1-C5 straight-chain or branched-chain alkyl, or substituted or unsubstituted C1-C5 alkoxy, or substituted or unsubstituted C6-C30 aryl, fused ring and fused heterocyclic ring. As an agricultural insecticide, the compound provided by the invention is high in activity, simple in structure and easy to synthesize; andas a plant pathogenic fungus inhibitor, the compound shows good fungus inhibition activity and multiple antibacterial spectrums.

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