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200053-32-3

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200053-32-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 200053-32-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,0,0,5 and 3 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 200053-32:
(8*2)+(7*0)+(6*0)+(5*0)+(4*5)+(3*3)+(2*3)+(1*2)=53
53 % 10 = 3
So 200053-32-3 is a valid CAS Registry Number.

200053-32-3Downstream Products

200053-32-3Relevant articles and documents

A facile synthesis of the 4-aza-analogs of 1-arylnaphthalene lignans chinensin, justicidin B, and Taiwanin C

Hitotsuyanagi, Yukio,Kobayashi, Masatsugu,Fukuyo, Masamoto,Takeya, Koichi,Itokawa, Hideji

, p. 8295 - 8296 (1997)

Reaction of anilines 1a-d with retronic acid (2) or 1,3- cyclopentanedione (3) produced anilinolactones 4a-d and anilinocyclopentenone 5a, respectively, which were then condensed with benzaldehydes to yield 4- aza-1-arylnaphthalene lignan analogs 6-19.

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