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489398-73-4

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489398-73-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 489398-73-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 4,8,9,3,9 and 8 respectively; the second part has 2 digits, 7 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 489398-73:
(8*4)+(7*8)+(6*9)+(5*3)+(4*9)+(3*8)+(2*7)+(1*3)=234
234 % 10 = 4
So 489398-73-4 is a valid CAS Registry Number.

489398-73-4Downstream Products

489398-73-4Relevant articles and documents

Silica-supported synthesis of some 1,3,5-trisubstituted 2-pyrazolines under solvent-free and microwave irradiation conditions

Azarifar, Davood,Maleki, Behrooz

, p. 157 - 159 (2005)

A simple method for the synthesis of 2-pyrazolines is described which occurs on silica surface under solvent-free conditions within 110-180 sec using microwave irradiation. The results obtained indicate that the use of silica gel as a support in pyrazolin

Convenient synthesis of highly functionalized pyrazolines via mild, photoactivated 1,3-dipolar cycloaddition

Wang, Yizhong,Rivera Vera, Claudia I.,Lin, Qing

, p. 4155 - 4158 (2008/02/12)

A mild, photoactivated 1,3-dipolar cycloaddition procedure was successfully developed for the synthesis of polysubstituted pyrazolines. This procedure involved the in situ generation of the reactive nitrile imine dipoles using a hand-held UV lamp at 302 n

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