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1649984-42-8

2-amino-3-[(E)-(4-hydroxyphenyl)diazenyl]-5-[2-(trifluoromethyl)phenyl]-5,6-dihydropyrazolo[1,5-a]pyrimidin-7(4H)-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

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  • 2-amino-3-[(E)-(4-hydroxyphenyl)diazenyl]-5-[2-(trifluoromethyl)phenyl]-5,6-dihydropyrazolo[1,5-a]pyrimidin-7(4H)-one

    Cas No: 1649984-42-8

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  • 1649984-42-8 Structure

  • Basic information

    1. Product Name: 2-amino-3-[(E)-(4-hydroxyphenyl)diazenyl]-5-[2-(trifluoromethyl)phenyl]-5,6-dihydropyrazolo[1,5-a]pyrimidin-7(4H)-one
    2. Synonyms:
    3. CAS NO:1649984-42-8
    4. Molecular Formula:
    5. Molecular Weight: 416.362
    6. EINECS: N/A
    7. Product Categories: N/A
    8. Mol File: 1649984-42-8.mol

  • Chemical Properties

    1. Melting Point: N/A
    2. Boiling Point: N/A
    3. Flash Point: N/A
    4. Appearance: N/A
    5. Density: N/A
    6. Refractive Index: N/A
    7. Storage Temp.: N/A
    8. Solubility: N/A
    9. CAS DataBase Reference: 2-amino-3-[(E)-(4-hydroxyphenyl)diazenyl]-5-[2-(trifluoromethyl)phenyl]-5,6-dihydropyrazolo[1,5-a]pyrimidin-7(4H)-one(CAS DataBase Reference)
    10. NIST Chemistry Reference: 2-amino-3-[(E)-(4-hydroxyphenyl)diazenyl]-5-[2-(trifluoromethyl)phenyl]-5,6-dihydropyrazolo[1,5-a]pyrimidin-7(4H)-one(1649984-42-8)
    11. EPA Substance Registry System: 2-amino-3-[(E)-(4-hydroxyphenyl)diazenyl]-5-[2-(trifluoromethyl)phenyl]-5,6-dihydropyrazolo[1,5-a]pyrimidin-7(4H)-one(1649984-42-8)

  • Safety Data

    1. Hazard Codes: N/A
    2. Statements: N/A
    3. Safety Statements: N/A
    4. WGK Germany:
    5. RTECS:
    6. HazardClass: N/A
    7. PackingGroup: N/A
    8. Hazardous Substances Data: 1649984-42-8(Hazardous Substances Data)

1649984-42-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1649984-42-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,4,9,9,8 and 4 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 1649984-42:
(9*1)+(8*6)+(7*4)+(6*9)+(5*9)+(4*8)+(3*4)+(2*4)+(1*2)=238
238 % 10 = 8
So 1649984-42-8 is a valid CAS Registry Number.

1649984-42-8Downstream Products

1649984-42-8Relevant articles and documents

Multicomponent and regioselective synthesis of dihydropyrazolo[1,5-a]pyrimidines from aromatic aldehydes, Meldrum's acid and aminopyrazole CAN508

Jedinak, Lukas,Krystof, Vladimir,Travnicek, Zdenek,Cankar, Petr

, p. 1892 - 1904 (2014)

A regioselective synthesis of dihydropyrazolo[1,5-a]pyrimidines is reported. The multicomponent reaction of readily available arylaldehydes, Meldrum's acid, and aminopyrazole CAN508 afforded fused pyrazolopyrimidines in high yields. The reaction proceeded regioselectively via initial Michael addition of the exocyclic amino group to arylidene Meldrum's acid intermediate followed by a ring closure at the endocyclic nitrogen of aminopyrazole. The regioselectivity of the reaction was determined by X-ray crystallography.

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