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129167-73-3

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129167-73-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 129167-73-3 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 3 respectively.
Calculate Digit Verification of CAS Registry Number 129167-73:
(8*1)+(7*2)+(6*9)+(5*1)+(4*6)+(3*7)+(2*7)+(1*3)=143
143 % 10 = 3
So 129167-73-3 is a valid CAS Registry Number.

129167-73-3Relevant articles and documents

Fluorine Radiolabelling Process

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Paragraph 0508; 0509; 0510; 0511, (2013/07/31)

The invention relates to a process for producing a process for producing an 18F-labelled compound, the process comprising treating a compound of formula (I) wherein EDG is an electron-donating group selected from —OH, —OR4, —NHR5 and —NR55R5; R1, R2, X1 and X2 are as defined herein; and R3 is selected from H, X3 and X4, wherein X3 is a monodentate cleavable surrogate group, and X4 is a bidentate cleavable surrogate group which is bonded (a) to said X1 or X2 and (b) to the ring carbon atom para to EDG; with [18F]fluoride in the presence of an oxidant, thereby producing, when R3 in the compound of formula (I) is H, an 18F-labelled compound of formula (II), wherein EDG is as defined above and R1, R2, X1 and X2 are as defined herein; or thereby producing, when R3 in the compound of formula (I) is said monodentate cleavable surrogate group X3, a compound of formula (IIa), wherein EDG′ is O, NR5, —NR55R5 or [OR4]+, and wherein R4, R5, R55, R1, R2, X1, X2 and X3 are as defined herein; or thereby producing, when R3 in the compound of formula (I) is said bidentate cleavable surrogate group X4, a compound of formula (IIc) or a compound of formula (IId), wherein EDG′ is O, NR5, —NR55R5 or [OR4]+, and wherein R4, R5, R55, R1, R2, X1, X2 and X4 are as defined herein

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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