Cas 121564-95-2,1-(4-Bromo-phenyl)-4-thioxo-1,3a,4,9a-tetrahydro-chromeno[2,3-c]pyrazole-3-carboxylic acid ethyl ester

121564-95-2

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Basic information

Product Name: 1-(4-Bromo-phenyl)-4-thioxo-1,3a,4,9a-tetrahydro-chromeno[2,3-c]pyrazole-3-carboxylic acid ethyl ester
Synonyms: 1-(4-Bromo-phenyl)-4-thioxo-1,3a,4,9a-tetrahydro-chromeno[2,3-c]pyrazole-3-carboxylic acid ethyl ester
CAS NO:121564-95-2
Molecular Formula:
Molecular Weight: 431.31
EINECS: N/A
Product Categories: N/A

Chemical Properties

Melting Point: N/A
Boiling Point: N/A
Flash Point: N/A
Appearance: N/A
Density: N/A
Refractive Index: N/A
Storage Temp.: N/A
Solubility: N/A
CAS DataBase Reference: 1-(4-Bromo-phenyl)-4-thioxo-1,3a,4,9a-tetrahydro-chromeno[2,3-c]pyrazole-3-carboxylic acid ethyl ester(CAS DataBase Reference)
NIST Chemistry Reference: 1-(4-Bromo-phenyl)-4-thioxo-1,3a,4,9a-tetrahydro-chromeno[2,3-c]pyrazole-3-carboxylic acid ethyl ester(121564-95-2)
EPA Substance Registry System: 1-(4-Bromo-phenyl)-4-thioxo-1,3a,4,9a-tetrahydro-chromeno[2,3-c]pyrazole-3-carboxylic acid ethyl ester(121564-95-2)

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Hazardous Substances Data: 121564-95-2(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 121564-95-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,5,6 and 4 respectively; the second part has 2 digits, 9 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 121564-95:
(8*1)+(7*2)+(6*1)+(5*5)+(4*6)+(3*4)+(2*9)+(1*5)=112
112 % 10 = 2
So 121564-95-2 is a valid CAS Registry Number.

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121564-95-2Relevant academic research and scientific papers

SOME NOVEL ASPECTS OF REGIOSELECTIVITY IN 1,3 DIPOLAR CYCLOADDITIONS OF 4H-1-BENZOPYRAN-4-THIONE

Baruah, Arpan K.,Prajapati, Dipak,Sandhu, Jagir S.

, p. 6137 - 6142 (2007/10/02)

4H-1-Benzopyran-4-thione (1) reacted smoothly with nitrilimines (3a-e) to afford regioselective cycloadducts (4a-e) in good yields.In contrast,benzonitrile oxide (6) and aldonitrones (7a-d) reacted preferentially at the thione function.The unstable cycloadduct (8) or (9) ruptured to give as isolable products chromone (10) and phenyl isothiocyanate (11) and the thioamides (12a-d).This indirectly proves the site of attack of the dipole at the thione group.

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