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54605-86-6

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54605-86-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 54605-86-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,4,6,0 and 5 respectively; the second part has 2 digits, 8 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 54605-86:
(7*5)+(6*4)+(5*6)+(4*0)+(3*5)+(2*8)+(1*6)=126
126 % 10 = 6
So 54605-86-6 is a valid CAS Registry Number.

54605-86-6Relevant articles and documents

A Conceptually New Approach to the Synthesis of Linear Tetrapyrroles Related to Phytochrome

Jacobi, Peter A.,Guo, Jiasheng

, p. 2717 - 2720 (1995)

Linear tetrapyrroles 9, of a type related to phytochrome (3), have been prepared by TBAF catalyzed 5-exo-dig cyclization of bis-acetylenic amides 8.

Syntheses of type-I porphyrins via monopyrrole tetramerization

Nguyen, Liem T.,Smith, Kevin M.

, p. 7177 - 7180 (2007/10/03)

Treatment of 2-[(N,N-dialkylamino)methyl]pyrrole-5-carboxylic acids (e.g. 10,12 or 11,13) in methanol with K3Fe(CN)6 gives type-I porphyrins (etioporphyrin-I 7, coproporphyrin-I tetramethyl ester 16, respectively); with pyrroles 10,12 the product 7 is contaminated with about 8% of other type-isomer(s).

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