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99833-61-1

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99833-61-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 99833-61-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,9,8,3 and 3 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 99833-61:
(7*9)+(6*9)+(5*8)+(4*3)+(3*3)+(2*6)+(1*1)=191
191 % 10 = 1
So 99833-61-1 is a valid CAS Registry Number.

99833-61-1Downstream Products

99833-61-1Relevant articles and documents

PHOTO- AND THERMOCHROMIC SPIRANS. 16. 2-OXO-3-PHENYL-5,5-DIMETHYLSPIRO(1,3-OXAZOLIDINE-4,2'-CHROMENES)

Luk'yanov, B. S.,Nivorozhkin, L. E.,Chernysh, Yu. E.,Minkin, V. I.

, p. 857 - 861 (2007/10/02)

New spirans of the 5,5-dimethyl-3-phenyl-2-oxazolidine series that display photochromic properties in alcohol solutions at -80 deg C were synthesized.The photoinduced forms are characterized by the presence of two long-wave absorption bands at 350-420 nm and 500-650 nm.The 1H and 13 C NMR spectra were studied.Anisochronicity of the diastereotopic methyl groups of the oxazolidone ring shows up only in the 13 C NMR spectra.

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