67091-34-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 67091-34-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,0,9 and 1 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 67091-34:
(7*6)+(6*7)+(5*0)+(4*9)+(3*1)+(2*3)+(1*4)=133
133 % 10 = 3
So 67091-34-3 is a valid CAS Registry Number.
67091-34-3Relevant articles and documents
Expedient synthesis of 1,1-diiodoalkenes
Bonnet,Le Gallic,Ple,Duhamel
, p. 1071 - 1073 (1993)
1,1-Diiodoalkenes 1 were readily prepared from carbonyl compounds 2 and diethyl diiodomethylphosphonate (3), generated in situ from commercial diethyl iodomethylphosphonate (4) or diethyl methylphosphonate (5). Starting from aldehydes, iodoacetylenes 6 co