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137042-20-7

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137042-20-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 137042-20-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,0,4 and 2 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 137042-20:
(8*1)+(7*3)+(6*7)+(5*0)+(4*4)+(3*2)+(2*2)+(1*0)=97
97 % 10 = 7
So 137042-20-7 is a valid CAS Registry Number.
InChI:InChI=1/C67H115N15O17/c1-35(2)29-40(33-83)69-54(91)45-23-20-26-80(45)60(97)66(16,17)77-53(90)42(31-37(5)6)72-59(96)64(12,13)78-56(93)47-25-22-28-82(47)62(99)67(18,19)79-57(94)49(38(7)8)74-51(88)44(34-84)71-55(92)46-24-21-27-81(46)61(98)65(14,15)76-52(89)41(30-36(3)4)70-50(87)43(32-48(68)86)73-58(95)63(10,11)75-39(9)85/h35-38,40-47,49,83-84H,20-34H2,1-19H3,(H2,68,86)(H,69,91)(H,70,87)(H,71,92)(H,72,96)(H,73,95)(H,74,88)(H,75,85)(H,76,89)(H,77,90)(H,78,93)(H,79,94)/t40-,41-,42-,43-,44-,45-,46-,47-,49-/m0/s1

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