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145071-98-3

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145071-98-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 145071-98-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,5,0,7 and 1 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 145071-98:
(8*1)+(7*4)+(6*5)+(5*0)+(4*7)+(3*1)+(2*9)+(1*8)=123
123 % 10 = 3
So 145071-98-3 is a valid CAS Registry Number.

145071-98-3Downstream Products

145071-98-3Relevant articles and documents

Studies on the Synthesis of Phytochrome and Related Tetrapyrroles. Dihydropyrromethenones by Photochemical Rearrangement of N-Pyrrolo Enamides

Jacobi, Peter A.,Buddhu, Subhas C.,Fry, Douglas,Rajeswari

, p. 2894 - 2906 (2007/10/03)

Dihydropyrromethenone 67b, a potential precursor for the synthesis of phytochrome 1, has been prepared in enantiomerically pure form beginning with N-aminopyrrole 64 and the acetylenic acid 62b. The key step involved a 3,5-sigmatropic rearrangement of N-pyrrolo enamide 66b.

Formal total syntheses of the β-lactam antibiotics thienamycin and PS-5

Jacobi, Peter A.,Murphree, Shaun,Rupprecht, Frederic,Zheng, Wanjun

, p. 2413 - 2427 (2007/10/03)

Chiral nonracemic acetylenic acids of general structure 11, prepared using the Schreiber modification of the Nicholas reaction, have been converted to β-amino acid derivatives of type 12 by a two-step sequence involving Curtius rearrangement followed by o

Tetrapyrroles. III. Homochiral dihydropyrromethenones from N-aminopyrroles and acetylenic acids

Jacobi,Rajeswari

, p. 6231 - 6234 (2007/10/02)

Dihydropyrromethenone 29, a potential precursor for the synthesis of Phytochrome (8), Phycocyanin (9) and Phycoerythrin (10), has been prepared in homochiral form from pyrrolohydrazide 27 by a sequence involving F-induced 5-exo-dig cyclization to afford enamide 28, followed by photochemical 3,5-sigmatropic rearrangement.

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