133188-83-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133188-83-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,1,8 and 8 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 133188-83:
(8*1)+(7*3)+(6*3)+(5*1)+(4*8)+(3*8)+(2*8)+(1*3)=127
127 % 10 = 7
So 133188-83-7 is a valid CAS Registry Number.
133188-83-7Relevant academic research and scientific papers
A useful preparation of substituted alkoxyacetylenes
Sorensen,Greene
, p. 7597 - 7598 (2007/10/02)
R'Cu(CN)ZnX reagents have been found to react rapidly with iodo alkoxyacetylenes to provide coupled products in synthetically useful yields.
