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149836-92-0

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149836-92-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 149836-92-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,9,8,3 and 6 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 149836-92:
(8*1)+(7*4)+(6*9)+(5*8)+(4*3)+(3*6)+(2*9)+(1*2)=180
180 % 10 = 0
So 149836-92-0 is a valid CAS Registry Number.

149836-92-0Relevant 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 (1997)

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.

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