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121952-89-4

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121952-89-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 121952-89-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,1,9,5 and 2 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 121952-89:
(8*1)+(7*2)+(6*1)+(5*9)+(4*5)+(3*2)+(2*8)+(1*9)=124
124 % 10 = 4
So 121952-89-4 is a valid CAS Registry Number.

121952-89-4Relevant articles and documents

THE PHOTOCHEMISTRY OF METHYL GERANATE, A MODEL CHROMOPHORE FOR INSECT JUVENILE HORMONE ANALOGS

Freeman, Peter K.,Siggel, Lorenz,Chamberlain, Paul H.,Clapp, Gary E.

, p. 5051 - 5064 (1988)

The irradiation of methyl geranate (3) in ether using 254 nm lamps produces methyl 5-methyl-2-isopropenyl-4-hexenoate (13), 1,6,6-trimethyl-endo-5-carbomethoxybicyclo-hexane (11), methyl 2-isopropenyl-5-methylcyclopentanecarboxylate (12) and methyl (3Z)-3,7-dimethyl-3,6-octadienoate (14).Photolysis run in water or in ether in the presence of base generates two additional dienes: methyl 3-methylene-7-methyl-6-octaenoate (16) and methyl (3E)-3,7-dimethyl-3,6-octadienoate (17).The photolysis of methyl (2E, 6E)-3,7-dimethyl-2,6-nonadienoate (4a) in ether procedures all Z/E isomers, 4a - 4d.

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