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691-03-2

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691-03-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 691-03-2 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 6,9 and 1 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 691-03:
(5*6)+(4*9)+(3*1)+(2*0)+(1*3)=72
72 % 10 = 2
So 691-03-2 is a valid CAS Registry Number.

691-03-2Upstream product

691-03-2Relevant articles and documents

Preparation and Properties of Tetrakis(trifluoromethylthiazyl), (CF3SN)4

Bielefeldt, Dietmar,Haas, Alois

, p. 1257 - 1260 (2007/10/02)

Tetrakis(trifluoromethylthiazyl) was prepared from CF3SCl and (CH3)3SiN3.At -30 deg C it is stable for a few days.On standing it oligomerizes and after 7 days at 20 deg C the melting point is above 180 deg C.By addition of F2 to CF3SNCO at -78 deg C CF3S(F)N=C(O)F is formed in good yield.In the presence of HgF2 it decomposes at 25 deg C to (CF3SN)x. - 19F NMR, IR, UV, and mass spectra are given.

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