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57610-45-4

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57610-45-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 57610-45-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,7,6,1 and 0 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 57610-45:
(7*5)+(6*7)+(5*6)+(4*1)+(3*0)+(2*4)+(1*5)=124
124 % 10 = 4
So 57610-45-4 is a valid CAS Registry Number.

57610-45-4Downstream Products

57610-45-4Relevant articles and documents

Studies of Chrysanthemic Acid Derivatives: Catalyses Reactions of 3-(2-Hydroxymethyl-3,3-dimethylcyclopropyl)-2-methylpropanol and Formation of a Novel Eight-membered Cyclic Sulphite

Crammer, Bernard,Goldschmidt, Zeev,Ikan, Raphael,Cohen, Shmuel

, p. 887 - 891 (2007/10/02)

Acid catalysed reaction of the cyclopropanediol (3) derived from cis-chrysanthemic acid cis-(1) afforded, depending on the reaction conditions, 3-vinyl-2,2,5,5-tetramethyltetrahydrofuran (4) and 4,4,7,7-tetramethyl-3-oxabicycloheptane (5).On treatment with thionyl chloride-pyridine complex there was obtained in addition the eight-membered cyclic sulphite, 6,6,9,9-tetramethyl-3,5-dioxa-4-thiabicyclononane 4-oxide (6).X-Ray analysis confirms a boat-chair conformation with the S=O group trans to the cyclopropane ring in an equatorial situation.Thermal reaction of (6) gave either (4) or a mixture of (5), cis-chrysanthemol (7), and cis-isochrysanthemol (8).

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