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17235-16-4

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17235-16-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 17235-16-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,7,2,3 and 5 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 17235-16:
(7*1)+(6*7)+(5*2)+(4*3)+(3*5)+(2*1)+(1*6)=94
94 % 10 = 4
So 17235-16-4 is a valid CAS Registry Number.

17235-16-4Relevant articles and documents

Synthesis of 3-Hydroxy-2,3,4,5-tetrahydro-3-methylbenzoxepins by Ring-closure of Isoprenyl Terminal Epoxides

Baird, Kenneth J.,Grundon, Michael F.

, p. 1820 - 1825 (2007/10/02)

Terminal olefins (13), obtained from reactions of tertiary chlorides (10) with triphenylmethyl-lithium, were converted into epoxides (14); base-induced ring-closure of the latter gave 2-hydroxymethyl-2-methylchromans (15) and 3-hydroxy-2,3,4,5-tetrahydro-3-methylbenzoxepins (17).Dehydration of the tetrahydrobenzoxepin (17a) furnished dihydrobenzoxepins.

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