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89332-92-3

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89332-92-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89332-92-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,3,3 and 2 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 89332-92:
(7*8)+(6*9)+(5*3)+(4*3)+(3*2)+(2*9)+(1*2)=163
163 % 10 = 3
So 89332-92-3 is a valid CAS Registry Number.

89332-92-3Downstream Products

89332-92-3Relevant articles and documents

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 (1988)

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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