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89333-85-7

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89333-85-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 89333-85-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,9,3,3 and 3 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 89333-85:
(7*8)+(6*9)+(5*3)+(4*3)+(3*3)+(2*8)+(1*5)=167
167 % 10 = 7
So 89333-85-7 is a valid CAS Registry Number.

89333-85-7Downstream Products

89333-85-7Relevant articles and documents

NEW METHOD FOR REGIOSELECTIVE SYNTHESIS OF α-SUBSTITUTED ALLYLSILANES AND ITS APPLICATION TO THE SYNTHESIS OF E- AND Z-TAGETONES

Ochiai, Masahito,Sumi, Kenzo,Fujita, Eiichi,Tada, Shin-ichi

, p. 3346 - 3349 (2007/10/02)

Sequential addition of lithium salt of carbanion and tributylstannylmethyl iodide (3) to vinyl sulfone 2 afforded β-tributylstannyl sulfones 5, which gave substituted allylsilanes 1 in a regioselective manner by the smooth destannylsulfonation.Allylsilane 8 prepared by Michael type addition of isopropenyllithium to 2 was converted into tagetones (10). Keywords --- allylsilane; β-trimethylsylilvinyl sulfone; destannylsulfonation; tributylstannylmethyl iodide; tagetone; Michael addition

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