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81652-77-9

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81652-77-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81652-77-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,5 and 2 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 81652-77:
(7*8)+(6*1)+(5*6)+(4*5)+(3*2)+(2*7)+(1*7)=139
139 % 10 = 9
So 81652-77-9 is a valid CAS Registry Number.

81652-77-9Downstream Products

81652-77-9Relevant articles and documents

ENAMINE CHEMISTRY-XXIII. THE CYCLOADDITION REACTIONS BETWEEN ENAMINOTHIONES AND ELECTROPHILIC OLEFINS AND ACETYLENES

Rasmussen J. B.,Shabana, R.,Lawesson, S.-O.

, p. 3693 - 3698 (2007/10/02)

The enamino-thione, 1c, reacts with acrylonitrile and 2-chloroacetonitrile at room temperature to give 3,4-dihydro-4-(1-pyrrolidinyl)-2H-thiopyrans, 4 and 5, respectively.The reaction between 1-aryl-3-(1-pyrrolidinyl)(piperidino)-apropene-1-thiones, 1a-c

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