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4622-37-1

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4622-37-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 4622-37-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,6,2 and 2 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 4622-37:
(6*4)+(5*6)+(4*2)+(3*2)+(2*3)+(1*7)=81
81 % 10 = 1
So 4622-37-1 is a valid CAS Registry Number.

4622-37-1Relevant articles and documents

Novel Syntheses of 1,6-Methanoannulene and 4-Methylazulene

Banwell, Martin G.,Papamihail, Con

, p. 1182 - 1183 (1981)

Reaction of 11,11-dichlorotricyclo1,6>undeca-3,8-diene (4) with potassium t-butoxide in dimethyl sulphoxide affords 1,6-methanoannulene (9) and 4-methylazulene (10); similar treatment of the dibromopropellane (5) yields the azulene (10), the monobromopropellane (11), but diminished yields of the annulene (9).

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