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129167-74-4

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129167-74-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129167-74-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,1,6 and 7 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 129167-74:
(8*1)+(7*2)+(6*9)+(5*1)+(4*6)+(3*7)+(2*7)+(1*4)=144
144 % 10 = 4
So 129167-74-4 is a valid CAS Registry Number.

129167-74-4Relevant articles and documents

Contrasting chemoselectivities in the ultrasound and microwave assisted bromination reactions of substituted alkylaromatics with N-bromosuccinimide

Heropoulos, Georgios A.,Cravotto, Giancarlo,Screttas, Constantinos G.,Steele, Barry R.

, p. 3247 - 3250 (2007)

Ultrasound and microwave assisted bromination reactions of various alkylaryls with N-bromosuccinimide, either neat or in water, shows diverse chemoselectivity. Thus, ring substitution occurs in water with ultrasound, whereas with microwaves both side-chain α-bromination and ring substitution occur. With neat reactants, side-chain α-bromination predominates for microwave assisted reactions. In the presence of water the chemoselectivity with microwave-promoted bromination is similar to that observed using classical methods.

The Synthesis and Structure of 3,4-Di-t-butylbenzoic Acid

Hambley, Trevor W.,Sternhell, Sever,Tansey, Charles W.

, p. 807 - 814 (2007/10/02)

3,4-Di-t-butylbenzoic acid (1) was synthesized by a seven-step sequence from 4-t-butylbenzoic acid, and its structure was determined by X-ray diffraction and refined to a residual of 0.065 for 1403 independent observed reflections.The crystals are triclinic, P1, a 6.080(1), b 8.777(1), c 13.912(3) Angstroem, α 80.76(2), β 80.84(2), γ 75.62(2)deg.It is the only example of a simple ortho-di-t-butylbenzene whose structure has been determined.The benzene ring experiences some out-of-plane distortion but, in general, strain is relieved by in-plane bond stretching and angular distortions.

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