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4500-18-9

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4500-18-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4500-18-9 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,5,0 and 0 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 4500-18:
(6*4)+(5*5)+(4*0)+(3*0)+(2*1)+(1*8)=59
59 % 10 = 9
So 4500-18-9 is a valid CAS Registry Number.

4500-18-9Upstream product

4500-18-9Downstream Products

4500-18-9Relevant articles and documents

Conformational Preferences in Hexahydro-2H-azepin-2-ones (Caprolactams)

Matallana, Astrid,Kruger, Albert W.,Kingsbury, Charles A.

, p. 3020 - 3025 (1994)

It was predicted and found that caprolactams are similar to cyclohexanes in conformational preferences.The compounds investigated were 7-methyl- and 3- and 7-(1,1-dimethylethyl)hexahydro-2H-azepin-2-ones.The 600-MHz NMR spectra showed discrete sets of axi

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