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61744-37-4

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61744-37-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 61744-37-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,1,7,4 and 4 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 61744-37:
(7*6)+(6*1)+(5*7)+(4*4)+(3*4)+(2*3)+(1*7)=124
124 % 10 = 4
So 61744-37-4 is a valid CAS Registry Number.

61744-37-4Relevant articles and documents

Polycyclic fused phenanthridines: An alternative approach from benzotriazoles

Katritzky, Alan R.,Du, Weihong,Matsukawa, Yasuhisa,Ghiviriga, Ion,Denisenko, Sergey N.

, p. 927 - 932 (1999)

We describe an alternative approach to polycyclic phenanthridines (7) and some of their analogues using conditions much milder than those previously reported. The procedure includes the generation of a benzotriazole stabilized carbanion, oxidation of the resulting anion to a radical, and elimination of nitrogen followed by ring closure to produce phenanthridines.

The thermal and photolytic decomposition of 9-aryl-9-xanthenyl azides to 11-aryldibenzo[b,f][1,4] oxazepines

Coombes, Philip,Goosen, Andre,Taljaard, Benjamin

, p. 559 - 563 (2007/10/02)

In contrast to the different ratios of products obtained in the thermal decomposition of some 9-aryl-9-xanthenyl azides, it was found that photolysis afforded the same product ratio. The mechanism of these reactions is discussed in terms of intermediates as well as conformational and electronic effects in the transition states.

C = C Double Bonds with Extreme Reactivity, III. Reactions of 9-(9-Fluorenylidene)xanthene

Schoenberg, Alexander,Singer, Erich,Stephan, Werner

, p. 3762 - 3765 (2007/10/02)

According to equations (1) to (4), 9-(9-fluorenylidene)xanthene (2) reacts with sulfur, malonodinitrile, aniline, or thiophenol to give the compounds 3, 5, 7-11, and diphenyl disulfide.

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