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336877-68-0

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336877-68-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 336877-68-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,3,6,8,7 and 7 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 336877-68:
(8*3)+(7*3)+(6*6)+(5*8)+(4*7)+(3*7)+(2*6)+(1*8)=190
190 % 10 = 0
So 336877-68-0 is a valid CAS Registry Number.
InChI:InChI=1/C13H16N2O6/c1-13(2,3)21-12(18)14-10(11(16)17)8-4-6-9(7-5-8)15(19)20/h4-7,10H,1-3H3,(H,14,18)(H,16,17)/t10-/m0/s1

336877-68-0Relevant articles and documents

New proctolin analogues modified by the novel D-or L-phenylglycine derivatives. Synthesis and biological studies

Szeszel-Fedorowicz,Lisowski,Rosinski,Issberner,Osborne,Konopinska

, p. 411 - 417 (2007/10/03)

New analogues of insect neuromodulator proctolin (H-Arg-Tyr-Leu-Pro-Thr-OH), modified in position 2 of the peptide chain by L-or D-phenylglycine and its 4-substituted derivatives were synthesized. For modification of proctolin a series of novel L-or D-phenylglycine derivatives H-Phg(4-NO2)-OH (1), Boc-Phg(4-NO2)-OH (2), Boc-Phg(4-Me2N)-OH (3), H-Phg(4-OBzl)-OH (4), Boc-Phg(4-OBzl)-OH (5), H-D-Phg(4-NO2)-OH (6), Boc-D-Phg(4-NO2,)-OH (7), Boc-D-Phg(4-Me2N)-OH (8), were used. The following proctolin analogues were synthesized: H-Arg-Phg-Leu-Pro-Thr-OH (9), H-Arg-D-Phg-Leu-Pro-Thr-OH (10), H-Arg-Phg(4-OH)-Leu-Pro-Thr-OH (11), H-Arg-D-Phg(4-OH)-Leu-Pro-Thr-OH (12), H-Arg-Phg(4-NO2)-Leu-Pro-Thr-OH (13), H-Arg-D-Phg(4-NO2)-Leu-Pro-Thr-OH (14), H-Arg-Phg(4-NH2)-Leu-Pro-Thr-OH (15), H-Arg-D-Phg(4-NH2)-Leu-Pro-Thr-OH (16), H-Arg-Phg(4-NMe2)-Leu-Pro-Thr-OH (17), H-Arg-D-Phg(4-NMe2)-Leu-Pro-Thr-OH (18). Myotropic activity of proctolin analogues 9-18 was assayed in vitro on the semi-isolated heart of the mealworm Tenebrio molitor and on the foregut of the locust Schistocerca gregaria. All analogues showed a weak or none activity.

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