Cas 4683-54-9,2-Cyclobuten-1-one,3-ethoxy-(7CI,8CI,9CI)

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Check Digit Verification of cas no

The CAS Registry Mumber 4683-54-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,6,8 and 3 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 4683-54:
(6*4)+(5*6)+(4*8)+(3*3)+(2*5)+(1*4)=109
109 % 10 = 9
So 4683-54-9 is a valid CAS Registry Number.

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4683-54-9Relevant articles and documents

A Annulation Approach to Eight-Membered Carbocyclic Compounds

Danheiser, Rick L.,Gee, Stephen K.,Sard, Howard

, p. 7670 - 7672 (1982)

REACTIONS OF α-SILYLATED KETALS WITH HALOTRIMETHYLSILANES

Shipov, A. G.,Livantsova, L. I.,Zaitseva, G. S.,Baukov, Yu. I.,Lutsenko, I. F.

, p. 620 (2007/10/02)

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4683-54-9