1228683-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1228683-91-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,2,8,6,8 and 3 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1228683-91:
(9*1)+(8*2)+(7*2)+(6*8)+(5*6)+(4*8)+(3*3)+(2*9)+(1*1)=177
177 % 10 = 7
So 1228683-91-7 is a valid CAS Registry Number.
1228683-91-7Relevant articles and documents
ORGANIC COMPOUNDS
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, (2011/12/14)
Optionally substituted (1- or 3-oxy)-4,5,7,8-tetrahydro-(optionally 4-oxo, 4-thioxo or 4-imino)-2H-imidazo[1,2-a]pyrrolo[3,4-e]pyrimidine or (1- or 3-oxy)-4,5,7,8,9-pentahydro-(optionally 4-oxo, 4-thioxo or 4-imino)-2H-pyrimido[1,2-a]pyrrolo[3,4-e]pyrimid