133898-89-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 133898-89-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,8,9 and 8 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 133898-89:
(8*1)+(7*3)+(6*3)+(5*8)+(4*9)+(3*8)+(2*8)+(1*9)=172
172 % 10 = 2
So 133898-89-2 is a valid CAS Registry Number.
133898-89-2Relevant articles and documents
4,5,6,11-tetrahydrobenzo [6,7] cycloocta [1,2-b]thiophen-6,11-imines and 6,11-dihydrobenzo [6,7] cycloocta [1,2-b] thiophen-6,11-imines
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, (2008/06/13)
The present invention relates to compounds of the formula STR1 wherein the broken line represents a saturated or an olefinic bond, R1 and R4 are each hydrogen or C1 to C6 alkyl, and R2 and R3/su
