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89398-16-3

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89398-16-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89398-16-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,3,9 and 8 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 89398-16:
(7*8)+(6*9)+(5*3)+(4*9)+(3*8)+(2*1)+(1*6)=193
193 % 10 = 3
So 89398-16-3 is a valid CAS Registry Number.

89398-16-3Relevant articles and documents

Total Synthesis of (+/-)-Nitramine. Development of a Ketene Equivalent in the Ene Reaction

Snider, Barry B.,Cartaya-Marin, Claudia P.

, p. 1688 - 1691 (1984)

(+/-)-Nitramine (1a) was synthesized in seven steps from methylenecyclohexane in 33percent overall yield.A three-step sequence was developed from methylenecyclohexane to aldehyde 4 in which methyl α-chloroacrylate was used as a ketene equivalent in the ene reaction.Aldehyde 4 was converted to nitrone 3 which cyclized to a 2.5:1 mixture of 2 and 9.Hydrogenolysis of 2 gave 1a.Lewis acid catalyzed cyclization of 4 gave a 3.5:1 mixture of hydrindanones 13 and 14 at 25 deg C and a 12:1 mixture of 13 and 14 at -20 deg C.

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