688339-03-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 688339-03-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,8,8,3,3 and 9 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 688339-03:
(8*6)+(7*8)+(6*8)+(5*3)+(4*3)+(3*9)+(2*0)+(1*3)=209
209 % 10 = 9
So 688339-03-9 is a valid CAS Registry Number.
688339-03-9Relevant articles and documents
CHIRAL INDOLE INTERMEDIATES AND THEIR FLUORESCENT CYANINE DYES CONTAINING FUNCTIONAL GROUPS
-
Page 32, (2008/06/13)
This invention relates to the functionalized cyanine dyes and more particularly, to the synthesis of chiral 3-substituted 2,3'-dymethyl-3H-indole and its derivatives as intermediates for preparation of cyanine dyes, to methods of preparing these dyes and the dyes so prepared.