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19687-12-8

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19687-12-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19687-12-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,8 and 7 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 19687-12:
(7*1)+(6*9)+(5*6)+(4*8)+(3*7)+(2*1)+(1*2)=148
148 % 10 = 8
So 19687-12-8 is a valid CAS Registry Number.

19687-12-8Relevant articles and documents

Towards the syntheses of α-trifluoromethylated oxygenated heterocycles and their precursors

Harthong, Steven,Billard, Thierry,Langlois, Bernard R.

, p. 2253 - 2263 (2007/10/03)

The possibilities of synthesizing various α-trifluoro-methylated oxygenated heterocycles, starting from trifluoroacetaldehyde methyl hemiacetal, through classic cyclization reactions, have been demonstrated. In this way, six-membered cyclic compounds, δ-l

The steric effect of a trifluoromethyl group

Nagai,Nishioka,Koyama,Ando,Miki,Kumadaki

, p. 233 - 235 (2007/10/02)

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